Marin – Water Well & Pump

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6100 Highway 12
Sebastopol, CA 95472
(707) 418-8956
(877) 813-7814

Serving all of Sonoma and Marin counties including Petaluma, Rohnert Park, Santa Rosa, Windsor, Mill Valley, Larkspur, San Rafael and Novato.

Services include water well drilling, pump system installation and water treatment. Brands include Jabsco, Briggs & Stratton and Flotec...
License 177681 | DCID7078233184
Map of these Diamond Certified companies
Cities: Belvedere, Corte Madera, Fairfax, Larkspur, Mill Valley, Novato, Ross, Sausalito, San Anselmo, San Rafael, Tiburon
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Why Trust Diamond Certified Water Well Companies Rated Highest in Quality?
High pressure water pumps and water tank installation services in Marin County.

Water pump equipment installed by a Diamond Certified water well and pump company. You'll feel confident choosing a quality water well drilling contractor or water pump installation company listed above because each has been rated Highest in Quality and has earned the Diamond Certified award. Read the following articles for more information on hiring and working with with a water well and pump company in Marin County. Photo: Weeks Drilling & Pump Company (2012)

By DIAMOND CERTIFIED PROGRAM STAFF WRITERS
Topic: Finding High Quality Water Well Drilling Services in Marin County

SAN RAFAEL — You are the customer. If your goal is to choose a water well and pump company that will deliver high customer satisfaction and quality, you’ll feel confident in choosing a Diamond Certified pump and well company. Each has been rated Highest in Quality in the most accurate ratings process anywhere. And you’re always backed by the Diamond Certified Performance Guarantee. Here’s why the Diamond Certified ratings and certification process will help you find a top-rated water well and water pump company and is unparalleled in its accuracy, rigor and usefulness:

1) Accuracy: All research is performed by live telephone interviews that verify only real customers are surveyed, so you'll never be fooled by fake reviews.

2) Statistical Reliability: A large random sample of past customers is surveyed on an ongoing basis so the research results you see truly reflect a Diamond Certified company’s top-rated status.

3) Full Disclosure: By clicking the name of a company above you'll see the exact rating results in charts and read verbatim survey responses as well as researched articles on each qualified company.

4) Guaranteed: Your purchase is backed up with mediation and the Diamond Certified Performance Guarantee, so you can choose with confidence.

Click on the name of a Diamond Certified company above to read ratings results, researched articles and verbatim customer survey responses to help you make an informed decision.

More than 200,000 customers of local companies have been interviewed in live telephone calls, and only companies that score Highest in Quality in customer satisfaction–a 90+ on a 100 scale–as well as pass all of the credential-based ratings earn Diamond Certified. By requiring such a high score to qualify, the Diamond Certified program eliminates mediocre and poorly performing companies. Read detailed information about the ratings and certification process.

How to Choose
Drilling New Water Wells in Marin County
Residential well drilling and water pump monitoring services.
A well drilling contractor checks well pump pressure and function settings. Photo: Weeks Drilling & Pump Company (2012)

When you don’t have municipal water to rely on, your water well becomes a critical factor. Domestic water wells, also called residential water wells, or private water wells, provide the water needed for daily living – drinking, cooking, washing people, washing clothes, and the like. The private water well may also provide water for gardening or landscaping....

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When you don’t have municipal water to rely on, your water well becomes a critical factor. Domestic water wells, also called residential water wells, or private water wells, provide the water needed for daily living – drinking, cooking, washing people, washing clothes, and the like. The private water well may also provide water for gardening or landscaping.

Let’s take a closer look at the domestic water well. We’ll also look briefly at the pumps used to move water from the well to the point of use.

Like many states, California places a premium on maintaining and preserving groundwater. Because of this, the state and some localities place restrictions on building wells and regulations and standards for building, maintaining, and decommissioning wells.

As a consumer, you may not be aware of all the requirements, but your Marin County well contractor should be. When you speak with your contractors, you will benefit from a little background on groundwater, wells and pumps, and constructions practices.

Use the articles below to get insight into what it takes to build a well. With these articles as an overview, you’ll feel more comfortable discussing the well-building process and pump installation with your contractor.


Groundwater is Precious in Marin County
California rises and falls by its water supply. Whether you live in San Rafael, Novato, Mill Valley, San Anselmo, Larkspur, or in smaller areas like Kentfield, Lucas Valley, or Santa Venetia, it’s important to protect the groundwater.

The water that your well will provide is part of the groundwater supply in California. Groundwater appears only in the saturation zone. It is the water – from precipitation, or from nearby lakes, for example – that exists in the spaces between soil particles, rock cracks and the like. The saturation zone lies well beneath the earth’s surface and is filled, or saturated, with water. The water table is the upper surface of the saturation zone and is affected by atmospheric pressure.

Digging to the water table means digging to the point where the earth is saturated with water. Within the saturation zone, you may find aquifers. An aquifer is any underground formation  – perhaps formed by rock, or by any geological structures – that can store water that wells can access. So ideally your well will tap into an aquifer to produce water.

Locating Your Well in Marin County
Think about your well even before you buy land. If you are considering buying a property with no well or other water source, talk to the realtor, neighbors, well construction companies in the area, and anyone else who can give insight into local water conditions. Their knowledge, along with any knowledge you can get from topographical reports, geological surveys, and the like, can help you determine if there is a possibility of finding sufficient water to support you.

Of course, this approach works better in the lowlands. In the hills and mountains, finding water can be more difficult and even less predictable than in the lowlands. Of course, no well construction firm can guarantee to find water, no matter how good their local knowledge is.

The next step is to consider where to place the well. You and your contractor should discuss this. Be aware that there are further restrictions, including how close you can build your well to existing facilities. For example, the well must be a specified distance from sewage tanks, from animal pastures, from graveyards, and other potential contaminants.

Your well drilling contractor should be aware of these distances. You can also find California well standards at the Department of Water Resources site. Keep these regulations in mind, but try to place your well as close as possible to the point of use so that you can minimize the distance the water has to travel. The well should be at the highest gradient or you will have to improve the gradient so that surface water always drains away from the well.

You need to look for a water source that will produce enough water for your needs. The recommended amount of water is a pumping rate between 1 gallon per minute (gpm) and 5 gpm. This wide range reflects the varied conditions in California. Some in the mountains make do with 1 gpm.

There are several ways to estimate how much water you need. One technique is to count the number of fixtures in the house, and calculate 1 gpm per fixture. For example, the bathroom contains a sink, a tub with a faucet, and a showerhead. These count as three fixtures. The other method is to determine the peak flow required over seven minutes, either in the morning or at night, when all the family is home and using water. These methods do not include water for landscaping or gardening. As a guideline, a typical three to four bedroom house uses 8 gpm to 12 gpm.

Consult your power company to see if there are buried power lines near where you plan to dig. Also check for trees or power lines that could potentially be damaged by the equipment used to drill the well.

Constructing the Well in Marin County
Wells in San Anselmo, Mill Valley, Larkspur, San Rafael, Novato, or Kentfield, Lucas Valley, or Santa Venetia all share some construction similarities. Let’s examine these so you can have a reasonable conversation with your contractor or potential contractor.

A well can be dug using different methods – any method when properly implemented should result in a usable, standards-compliant well. In California, most wells are dug using rotary, reverse rotary, air rotary, and cable tool techniques. Different methods are used for different landscapes and for different purposes; for example, some techniques only work to build shallow wells. Some methods – for example, cable tool drilling - might take longer than other methods – e.g. rotary drilling.

In addition, rotary drilling and reverse rotary drilling need lots of water during the drilling process and a place to send out the muddy result, which will be a consideration if no water is available in the location.

As a consumer, though, you don’t need to worry too much about choosing the method of creating your well. Your contractor will probably choose the method based on his or her equipment, the land’s composition, and the depth of well needed. You should not concern yourself too much about this, as long as the equipment is in good repair so there are no breakdowns.

Well construction begins with a borehole – the hole cut into the ground. As the contractor drills, drill cuttings will emerge from the hole. The contractor must take note of these in a well log. For the contractor, part of the reason for keeping the log is to know what kind of cuttings emerge from the hole and the amount and quality of water coming out of the hole. Knowing the composition of the cuttings – whether the surrounding material is coarse or fine, for example - will help in the well design.

The well log will eventually be given to the owner and a copy must be registered with the state. The Department of Water Resources maintains a well completion log for all wells in California.

Once the hole is created, the well itself is constructed. Depending on what the contractor learns from boring the hole, well screens are placed in the hole, in combination with casing. The screen is designed to let water in and keep particles out. It has openings calibrated to the surrounding material to prevent that material from entering the well and clogging the pump.

The walls of the well are called the casing – a tube inserted into the hole through which the water will flow up to the surface. The tube may be steel, or plastic, among other materials. Depending on the local geology, the well screen and casing may be surrounded by a gravel pack. This pack acts as an additional filter before water enters the screen.

Once the casing and screens are installed the well must be sealed. The casing is smaller than the borehole. The area between the outer wall of the casing and the inner walls of the borehole is called the annulus or annular space. It is filled with cement and bentonite to a regulated depth to prevent contaminants from entering. This filling in of the annulus is also called grouting.

Next, the well needs to be developed. The contractor uses some method such as forcing water or air through the well to clear the well of any particles left over from construction. Good development extends the life of the well and of the pump, since contaminants can obstruct and damage the pump. Once the well is developed, the contractor should do a pump test, also called an aquifer test.

This test determines how much water is readily available from the well. The test pumps water at different rates over time and measures how much the water level in the well changes. The test results include pump rate and water level information that you will need to size your pump.

At this point, the contractor should inspect the well – some contractors have cameras they can drop down the well to see the sides of the well. A final well seal is installed. A pump and, typically, a water storage system, are installed. If you want your water to run to the house automatically, then you will likely need at least a storage tank. A pressurized storage tank includes compressed air and water.

Ideally, there should be a barrier between the water and the air, so that the water does not absorb the air. This tank provides a certain amount of storage, but mostly it takes advantage of the compressed air to help push the water through the pipes. In some cases, the tank becomes waterlogged – that is, the air does get absorbed and the tank completely fills with water. In this case, the pump will continue to operate continuously, which is not good for its extended life.

Searching Out the Right Qualifications for Well Drilling Services in Marin County
With a basic knowledge of what well building entails, you’ll be able to search out the right contractor. Whether you are creating your well in San Rafael, Novato, San Anselmo, Larkspur, or Mill Valley, or in Kentfield, Lucas Valley, or in Santa Venetia, check to see if you need a permit. Many areas in California require a permit before you can dig or modify an existing a well.

To see if you live in such an area, check with the Department of Water Resources on their website to see if a well-permitting agency exists for your region or city. If it does, you will need to obtain a permit before you can start your well.

California requires a contractor’s license for well builders. Moreover, it requires that those who construct wells have a C57, the specific license for a water well drilling contractor. Once your well is constructed, you will need a pump. Installing a pump also requires a specifically licensed contractor, most often a C61. The C61 specialty license includes subcategory D21 for machinery and pumps.

Some well water contractors in Marin County also sell and install pumps for your well, while others will refer you to a pump contractor. No matter whether you go with a single firm or with multiple firms, make sure each is properly and currently licensed for what they are doing. You can check license status at the Department of Consumer Affairs, Contractors’ State License Board site.

The License is the Starting Point for Finding a Good Contractor in Marin County
Do check that your contractor has a valid, current license. Don’t stop there. It’s a good idea to ask around for recommendations. Especially when looking for water, local knowledge can be invaluable. You’ll want someone who has earned a good reputation for knowing the region. You should also check to see if there is a physical location for the contractor. If you can only get your contractor on a cell phone, you might encounter some frustration.

Workers compensation insurance is mandatory in California for any company with employees. Check that your contractor carries it. Ask if your contractor has general liability insurance. General liability insurance is not mandatory. If the contractor does not have general liability insurance, you can ask them how they will take care of any losses from damage to property that would usually be covered by insurance. If they cannot cover such costs, you or your insurance may have to.

Verify that your contractor is bonded, since a California contractor must also have a contractor’s license bond. Be aware though, that the bond is a minimal amount and may not cover all the costs of any work that does not meet local codes. Also, the mere fact of being bonded does not provide any guarantee of the contractor’s abilities.

Your pump contractor may or may not be the same firm as your well contractor. Sometimes firms will do both, but they must be licensed for both. Sometimes the well vendor can refer you to a pump vendor. It’s important to be aware that you cannot know what pump you need for your well until you have had the well drilled and the pump test performed.

The pump size depends on how much work it has to do to extract water, so you need the results of the pump test. Be wary of anyone who tries to sell you a pump before you have performed the pump test.

Avoid any contractor unwilling to provide a detailed, written estimate. The estimate should not be a lump sum. It should itemize categories of services and materials.

The contract should include:

  • Charges by unit:
    Materials (gravel pack, sealant, etc) by unit
    Services – grouting, test pump per hour, developing per hour
    Drilling per foot
    Casing per foot
  • Casing material and diameter. The casing material – steel, plastic, etc. – should be defined as well as the diameter and thickness. The diameter will be based on the expected amount of water from the well.
  • Size of the well hole. There are standards for the diameter between the casing and the borehole wall, based on the method of drilling. Your contract should specify both the method of drilling and the borehole size.
  • Estimated depth of well. You cannot guarantee where water will be found, but you can decide with your contractor in advance on an estimate.
  • Sealing the annulus. Again, the space between the casing and borehole wall should be sealed. The contract should state how deep within in the well this sealing goes, based on the standards for the well type and circumstances.
  • Well development. Cleans the well of dirt and other particles.
  • Pump test.
  • Intake section. Where water actually enters the well. The contract should state the type and diameter of the material used – for example, screens or perforated casing.
  • Well completion report.
  • If included, water testing services.
  • If included, the pump, water storage supplies, pump power source, and anything else related to the water system.
  • Guarantee. The contractor can provide good workmanship and materials. Of course, there can be no guarantee that you will strike water or that the water will be of good quality.

Since you are not dealing with a precise situation, you may come across situations where modifications to the contract are necessary. You should discuss these with your contractor and understand them. In a few cases, the changes may be significant enough to warrant a new contract.

Bringing Up Well Water in Marin County
Whether your well sits in San Anselmo, Novato, San Rafael, Larkspur, or Mill Valley, or in Lucas Valley, Santa Venetia, or Kentfield, a pump is usually required to bring water to the land surface. The most common kinds of pumps are submersible pumps and jet pumps.

The kind of pump you need will depend on the depth of water in your well. A submersible is very common in California. You will find some discussions of two-wire or three-wire pumps. In a two-wire pump, the controls are built in. In a three-wire pump, you need a separate control box. Jet pumps are sometimes classified as shallow well (25 feet or less) and deep well (25-110 feet). Most people install pumps that run on electricity. There are alternatives available, including solar, air-driven, and manual.

When you determine which pump to buy, you or your contractor will need to know the following:

  • Casing material and thickness
  • Distance from the top of the well to the waterline (the water’s surface)
  • Water use – for household only, or for other uses
  • Elevation between pump and point of use
  • Casing material and thickness
  • Pipes – what kind and what diameter and thickness
  • Distance water must travel from well

Pumps are sold by capacity, measured in gallons per minute. It’s important not to get a pump that is more powerful than you need, since this inefficiency will raise energy costs. Your pump contractor should help you determine the other pieces you need to complete your pump and water system. These may include switches, valves, and power sources. Valves may be particularly important to prevent backflow into your well.

Well Maintenance and Eventual Destruction in Marin County
No matter where you live in Marin County, whether in San Anselmo, Larkspur, Mill Valley, Novato, San Rafael, Kentfield, Lucas Valley, or Santa Venetia, your well requires maintenance to stay in peak condition. Good well maintenance can include keeping a well log, which records information over time. Typical maintenance includes:

  • Record the water level (from the ground to the top of the water surface) twice a year. Spring and fall are often recommended. This will give you a picture of water availability. It might vary with the seasons.
  • Pump test once in a while – maybe every two years. Some utilities will perform a pump test. Take note of any changes in pump capacity.
  • Water quality. Test if you notice significant changes in your water. Test for bacteria annually, and for chemical quality every five years.
  • Clean the well, especially after work or repairs on the well.

If you need to modify your well at any time, you will need a permit. When a well is no longer producing or will not be used any more, the state requires that it be destroyed by a licensed well contractor. The well destruction must be reported to the state. The destruction typically involves sealing the well to prevent contaminants from getting into the groundwater.

Quality Testing the Water from Your Marin County Well
Finding water is not enough. You must also test the water for its quality and safety. You should first test as the well is being dug, then test regularly over time. You should determine with your contractor who will be responsible for the water quality testing. The water sample should be tested by a state-certified laboratory.

You can find information on certified laboratories and related information on the Environmental Laboratory Accreditation Program website from the California Department of Public Health. Based on the findings, you may want to add pieces to your water system, such as water softeners.

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Know What You Want
What to Ask Yourself Before Hiring Well Drilling Contractors in Marin County

As you install your water system in Marin County, whether you are in San Anselmo, Larkspur, San Rafael, Novato, Mill Valley, or Kentfield, Lucas Valley, or Santa Venetia, get ready by drawing up a list of questions. Having the answers to these questions will help you as you enter into conversations with your contractors....

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As you install your water system in Marin County, whether you are in San Anselmo, Larkspur, San Rafael, Novato, Mill Valley, or Kentfield, Lucas Valley, or Santa Venetia, get ready by drawing up a list of questions. Having the answers to these questions will help you as you enter into conversations with your contractors.

  • Do I want a Diamond Certified well drilling company that is rated best in quality and backed by the Diamond Certified Guarantee?
  • What kind of land am I drilling in? Is it lowland? Close to the coast? In the mountains?
  • What will I be using the water for: only for the house or also for gardening and landscaping?
  • Do I have good elevations near my house where the well might be situated?
  • What is the general terrain like? Are there trees or shrubs that might need to be cleared?
  • Do I have overhead power lines that might be in the way?
  • Are there underground power lines near my house and if so, are they near where the well might be?
  • How much water do I think I will need? How have I determined how much?
  • Do I have any neighbors I can consult about their wells?
  • What potential sources of contamination are around? Do I have septic systems, sewage systems, grazing animals, graveyards, power-generating facilities, etc., nearby?
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What to Ask on the Phone
Interviewing Your Water Well or Pump Contractor on the Phone

You want to find a Marin County well drilling contractor and water pump professional you can trust. But you may not have a great deal of knowledge about wells and pumps. So how do you know who will be best for you? Of course, you’ll trust your own evaluation of the contractor. But you can also ask a series of questions to help you compare different well service contractors.

Some of those questions might include: ...

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You want to find a Marin County well drilling contractor and water pump professional you can trust. But you may not have a great deal of knowledge about wells and pumps. So how do you know who will be best for you? Of course, you’ll trust your own evaluation of the contractor. But you can also ask a series of questions to help you compare different well service contractors.

Some of those questions might include:

  • Has your well drilling company earned and maintained a Diamond Certified rating?
  • Do you do any water quality testing or will that be my responsibility?
  • What happens if we don’t find water where we drill? What do I still have to pay?
  • Do you have a current well water construction license (specifically C57)?
  • Do you provide an itemized, written contract?
  • Do you have workers compensation insurance and general liability insurance?
  • What kind of geological studies, topography reports, or other tools do you use to determine where water might be?
  • How long have you worked in this area; how familiar are you with existing wells and water supplies?
  • Do you have a guarantee and what does it cover? What if I suddenly start getting particles in my water?
  • Do you also install pumps and water systems? Do you recommend someone if you do not?
  • Do you help with getting a well permit, if one is required in my area, or do I deal with the permitting agency myself?
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What to Ask in Person
Speaking With Marin County Well Drilling Contractors in Person
Deep well drilling services for residential wells and commercial building wells.
A Marin County well drilling crew working on a new well installation project. Photo: Weeks Drilling & Pump Company (2012)

Telephone interviews will help you trim your list of water well drilling contractors to a manageable size. Once you've interviewed contractors over the phone, it's time to talk to a few in person. Invite them to visit your property to see the site so they can give you a solid estimate and answer your questions.

Chances are good that you will find you have a few more questions to ask once you have narrowed your choices, but some base questions you should ask include these:...

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Telephone interviews will help you trim your list of water well drilling contractors to a manageable size. Once you've interviewed contractors over the phone, it's time to talk to a few in person. Invite them to visit your property to see the site so they can give you a solid estimate and answer your questions.

Chances are good that you will find you have a few more questions to ask once you have narrowed your choices, but some base questions you should ask include these:

  • Based on your well drilling methods, will we need a water source for the well installation process?
  • How old is your equipment and is it in good working condition?
  • When can you start the job, are there scheduling conflicts/limited machinery available?
  • What will my land look like once the well is complete?
  • How tall is your equipment and how big? Do we need to consider power lines and possibly removing trees?
  • Will you do the work yourself or do you have a team that does it?
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What to Ask References
Questions for References of Marin County Well Drilling and Water Pump Services

It’s best to choose a Diamond Certified water well and pump vendor because all certified companies have passed an in-depth ratings process that most other companies can’t pass. If you want quality from a water well and pump vendor in Marin County and the greater Bay Area, you can have confidence choosing a Diamond Certified company. Diamond Certified reports are available online for all certified companies. And you’ll never be fooled by fake reviews....

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It’s best to choose a Diamond Certified water well and pump vendor because all certified companies have passed an in-depth ratings process that most other companies can’t pass. If you want quality from a water well and pump vendor in Marin County and the greater Bay Area, you can have confidence choosing a Diamond Certified company. Diamond Certified reports are available online for all certified companies. And you’ll never be fooled by fake reviews. That’s because all research is performed in live telephone interviews of actual customers.


If you can’t find a Diamond Certified water well and pump vendor within reach, you’ll have to do some research on your own. If you do, it’s wise to call some references provided by your water well and pump vendor. Keep in mind, though, that references provided to you by the water well and pump vendor are not equal in value to the large random sample of customers surveyed during the Diamond Certified ratings process. That’s because references given to customers from companies are cherry-picked instead of randomly selected from all their customers. So the contractors will likely give you a few customers to call that they know are satisfied.

If you do call references on your own, specifically ask for a list of the company’s 10 most recent customers. This will help avoid them giving you the names of only customers they know were satisfied.

  • What kind of method was used to dig your well? (rotary, air rotary, cable tool, etc.)
  • What was your land like after the well was built?
  • Did you have any other water system installed besides the well and pump? Can you describe it?
  • Were you satisfied with the well and water system installed? If not, which part dissatisfied you and why?
  • Did the contractor seem knowledgeable about the area and other wells in the area?
  • If your land is close to mine, what water quality did you encounter and who had your water tested  – you or your contractor?
  • How long did it take to drill your well?
  • Did your well contractor also install your pump?
  • Is your land close to my land and of a similar type?(lowland, mountain, etc.)
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Review Your Options
Hire a Good Water Well Drilling Service and Water Pump Contractor in Marin County
The Diamond Certified symbol has been awarded to companies that scored Highest in Quality in an accurate ratings process.

Your choice of water well and pump vendor impacts the purity and availability of your well water. So before deciding on the best water well and pump vendor in Marin County for you, it’s important to consider the following questions....

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Your choice of water well and pump vendor impacts the purity and availability of your well water. So before deciding on the best water well and pump vendor in Marin County for you, it’s important to consider the following questions.

  • Is the well contractor frank about the possibility of not finding water?
  • Does the water pump contractor show concern for preventing contamination and protecting the groundwater supply?
  • Does the water wells contractor show knowledge of neighboring wells?
  • Has the Marin well drilling contractor worked in similar conditions previously – as far as location, land type, etc.?
  • Does the contractor demonstrate knowledge of state requirements? For example, filing a well completion report with the state, getting a permit to dig in many regions, knowing the standards for well location, knowing the construction and materials requirements.
  • Is the contractor knowledgeable about the local geology and water sources?
  • Is the contractor currently licensed to perform the tasks you want to hire him or her for? Water wells and pumps require different licenses.
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How to Work With
Deciding to Hire a Marin County Water Well and Water Pump Contractor

Your background research and your diligence in gathering some basic information can make your well construction go more easily. Begin by identifying your land. The state has a specific way of identifying land plots. You can ask your contractor if this is information he or she will help you uncover.
...

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Your background research and your diligence in gathering some basic information can make your well construction go more easily. Begin by identifying your land. The state has a specific way of identifying land plots. You can ask your contractor if this is information he or she will help you uncover.

Find out whether your region of California requires permits to construct a well. Find out whether your contractor will help with permitting or not. Determine how much water you need and for what uses, whether house only or house and landscaping. If there are existing pipes to the house, find out their size, what materials they are made of, and how far they reach. Be alert to any sources of contamination on or near your land – pastures, sewage systems, sewers, etc.


When it comes to working with your pump contractor, know your water capacity from your well completion report and pump test. Be able to give the depth of your well – how far down do you have to go to reach water. You’ll need to know how much water you want and how much water your well is capable of producing. Think about power sources. Consider whether you would like alternate pumps – for example, a manual pump - installed as backups. If there are existing pipes, know their length and size. Be aware that beyond a pump and power source, you may need a tank for storage and pressure, valves to prevent backwashing into the well, or other water system components. Ask if your pump contractor also provides water conditioning and water softening. You won’t know if you need these until you test the water, but you’ll know if you need to find someone else to manage these tasks if you do happen to need them.

Now That You’ve Found Your Marin County Water Pump Installation Contractor
Working with your contractor involves several things. Well location is one thing you should discuss. Consider whether the contractor will be able to get his or her equipment to the location – are there obstacles? Use your contractor’s local knowledge of existing wells, region geology, and general expertise to discuss where to locate the well. Keep in mind that the well should be elevated relative to the rest of the ground. Also keep in mind distances to the point of use so that you can reduce pumping and piping when possible. You are hiring your contractor for his or her expertise, so once you have found someone you trust, treat their advice respectfully.

How to Make Your Well Drilling Contractor’s Job Easier
In some cases, as drilling proceeds, there may be changes to the agreed-upon approach. For example, if you have a depth clause in the contract, you may not find water at that depth. Know that you are working with an unpredictable situation; be flexible when appropriate. Be available so that your contractor can get in touch with you when conditions change or decisions are required. Do not try to get your contractor to promise that he or she will find water.

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Be a Good Customer
How Can You Be a Good Well and Water Pump Customer?

It's the water well and pump vendor’s responsibility put in quality water wells and pumps using the best possible installation techniques. But you play a big part in the success of your water well and pump, too. Here are a few simple steps you can take to be a good customer when hiring a Marin County water well and pump vendor....

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It's the water well and pump vendor’s responsibility put in quality water wells and pumps using the best possible installation techniques. But you play a big part in the success of your water well and pump, too. Here are a few simple steps you can take to be a good customer when hiring a Marin County water well and pump vendor.

  • Be clear and upfront with the water well and pump vendor. Let them know what you want from your water well and pump, the long-term outcome you’re expecting and specific ways they can satisfy your expectations.
  • Before you hire a water well and pump vendor in Marin County, restate your expectations and goals, and reiterate to the water well and pump vendor representative your understanding of the agreement. By being clear about your expectations and theirs, you can avoid most conflicts.
  • Ask your water well and pump vendor if you should call to check on the progress or if he will call you with updates.
  • Be sure your service representative has a phone number where they can reach you at all times while they’re building and installing your water well and pump. The work will move along more smoothly if your water well and pump vendor can reach you for any necessary updates, questions or work authorizations.
  • When your contractor contacts you, return calls promptly to keep the water well and pump vendor on schedule.
  • Pay for the water well and pump vendor’s work promptly.

Why would you want to be a good customer? Water well and pump vendors in Marin County appreciate customers who are straightforward, honest and easy to work with. Your good customer behavior sets the tone from your end and creates an environment conducive to a good relationship. Things may very well go smoother and any problems may be more easily resolved.

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Check the Work
Validating Your Marin County Water Well Contractor’s Work Against Invoice

Without interfering with the work, you can check the well depth by dropping a weighted string to see how deep the hole is.

As materials arrive, you should also take care that the materials provided are as described – a plastic casing where a plastic casing was stipulated. If there are differences you should ask why.

You should not accept any materials that look damaged or secondhand. You want your well to work properly for a long time....

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Without interfering with the work, you can check the well depth by dropping a weighted string to see how deep the hole is.

As materials arrive, you should also take care that the materials provided are as described – a plastic casing where a plastic casing was stipulated. If there are differences you should ask why.

You should not accept any materials that look damaged or secondhand. You want your well to work properly for a long time.

Verify that you have received every service and item listed on the invoice. If anything doesn't add up, ask your contractor immediately.

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Written Warranties
Requesting Written Guarantees From Marin County Well Drilling Contractors
Your well contractor can help you decide which water pump is best for you.
Water pumps come in a variety of sizes and with different performance abilities. Photo: Weeks Drilling & Pump Company (2012)

Well and pump work requires detailed contracts for the best results. The contract should include a guarantee of workmanship and materials.

You need to understand what the workmanship part includes – what if you find particles in your well later? How much later?

If your water well contractor is providing services for water quality testing, understand exactly what is included. Is it testing only or remediation as well? If remediation, how long are those services guaranteed?...

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Well and pump work requires detailed contracts for the best results. The contract should include a guarantee of workmanship and materials.

You need to understand what the workmanship part includes – what if you find particles in your well later? How much later?

If your water well contractor is providing services for water quality testing, understand exactly what is included. Is it testing only or remediation as well? If remediation, how long are those services guaranteed?

The length of your warranty is especially important since water quality may change over time. Whoever supplies your pump should provide a written warranty describing how long the pump is covered and what is covered – just factory defects or are use conditions covered?

Regardless of the products, services or warranty details you've been promised, your well drilling company should offer you a written warranty with the following items:

  • The Marin County well drilling contractor's name, physical address and license number.
  • The date the warranty is effective and the date it expires.
  • Your responsibility for filing a warranty claim.
  • If the well contractor will give you a refund, or will repair or replace the problem equipment or services and if they will completely refund or redo the job or if it is prorated.
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Top 10 Requests
Top Well Drilling Services Provided By Marin County Well and Water Pump Contractors

Water well and pump contractors have a pretty straightforward set of requirements. Users want water running smoothly to their houses. To achieve this, you may be able to go to a single provider who digs the well and installs any related water storage systems. Or you may have to go to several vendors. Here are some common service requests related to wells and pumps....

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Water well and pump contractors have a pretty straightforward set of requirements. Users want water running smoothly to their houses. To achieve this, you may be able to go to a single provider who digs the well and installs any related water storage systems. Or you may have to go to several vendors. Here are some common service requests related to wells and pumps.



Modify Wells

Modifying an existing well could mean that you dig deeper, in cases where the water table has lowered. You should know that the state of California treats modifying a well the same way as digging a new well, in terms of permits required and standards enforced.

Install Water Pumps

The pump moves the water from the well to the point of use. A new pump is installed based on how much water it is expected to generate.

Install New Water Systems

Sometimes the owner needs more than a pump to get water to the house. For example, you may need pressurized storage tanks to help move water smoothly through the pipes. You should discuss with your well contractor and your pump provider whether additional water systems devices are needed and the benefits of each.

Repair Water Pump

Sometimes the pump needs repair, perhaps because there are particles in the water that have got into the pump. The repair should be done by a licensed contractor, and you should clean the well after work is done on it, so that contaminants are not introduced.

Water Quality Testing

Well water needs to be tested when it is first drawn and over time. Initial testing can tell you if you need to take remedial steps because of elements in the water. Bacteria and other elements may be naturally occurring. The water composition may be hard, and you may want to introduce water softening systems. Over time, test when your water seems to change significantly. Also test on a regular schedule for bacteria and chemical composition.

Water Level Test

The water level is where the water appears inside the well. This may fluctuate, for example, with the seasons. However, as part of your pump test, you should note the water level over time to see if there is any danger of the pump going dry.

New Well Drilling Services in Marin County

Install a new well so that the house has water.

Destroy Well

When a well is no longer producing or needed, it should be destroyed. The destruction must be performed by a licensed contractor and reported to the state.

Clean Well

On a periodic basis, you should clean your well to keep it free of particles that may have loosened or entered over time.

Pump Test

A pump test determines the capacity of the pump to produce water. Performed when the well is first dug, it is used to determine which size pump to install. Perform on a regular basis to determine if pump is still at capacity and if water level is significantly changing.

Popular Well and Water Pump Brands Used in Marin County

The kind of pump you install will depend on the kind of well that is dug. Manufacturers often make many different types of pumps. Below are some of the commonly available brands for pumps and water systems.

WAYNE

Submersible, shallow well jet pumps, and convertible well jet pumps. From Wayne Water Systems.

Franklin Electric

Submersible and jet pumps, among others.

Grundfos

Grundfos offers a wide selection of pumps, including submersibles, jet pumps, and booster pumps.

Sta-Rite Water Pumps and Water Tanks

From Pentair, the Sta-Rite brand includes jet pumps, submersible pumps, tanks, and pump accessories.

Goulds Pumps

Goulds Pumps include many different types of pumps, including submersibles. It has been spun off from its parent ITT.

Norwesco

Norwesco’s line of tanks includes above ground cisterns and below ground cisterns. It’s storage tanks are supplemented by values, fittings, lids, and couplers.

Amtrol Water Tanks

Amtrol offers many tank lines. Its lines include Well-X-Trol, Champion, Pro-Line, Value-Well, along with tank boosters. Pre-pressurized tanks and diaphragm tanks are available.

Blue Angel Pumps

Submersible, shallow well jet pumps, and convertible well jet pumps. From Wayne Water Systems.

Berkeley Water Pumps

From Pentair, the Berkeley brand offers many different types of pumps and accessories.

Xerxes Water Pump Accessories

Xerxes sells tanks and accessories. It includes a tank labeled for potable water. It is a ZCL Company.

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If Things Go Wrong
The Diamond Certified Performance Guarantee   

Diamond Certified water well contractors are backed by the Diamond Certified Performance Guarantee. If the water pump company is Diamond Certified and you can’t resolve the issue by talking with the owner, contact the mediation department at info@diamondcertified.org or call 800-738-1138.

Stopping Conflict with Marin County Water Wells and Pumps Vendors
...

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Diamond Certified water well contractors are backed by the Diamond Certified Performance Guarantee. If the water pump company is Diamond Certified and you can’t resolve the issue by talking with the owner, contact the mediation department at info@diamondcertified.org or call 800-738-1138.

Stopping Conflict with Marin County Water Wells and Pumps Vendors

A sturdy contract is your best defense. You should first try to resolve the conflict with your contactor. If you cannot, California provides a process for registering complaints. The Department of Consumer Affairs supports the Contractors’ State License Board. Their Web site includes information on how to file a complaint. The Board may refer the complaint to small claims court or other civil remedies. If the Board pursues an investigation, it has several options it can impose, ranging from a letter of warning to citations with fines.

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Glossary of Terms
Glossary of Water Well and Water Pump Terms
Diamond Certified deep water well drilling & residential water well installation
Drinking water well drilling services in the Bay Area and beyond. Photo: Weeks Drilling & Pump Company (2012)

Below you will find some terms to help you understand where your water comes from and how your well and pump operate. This can help you better communicate with your Marin County well drilling and water pump contractor.

aeration zone
The aeration zone sits above the saturated zone and just under the earth’s surface. In the aeration zone, some spaces between rock and soil particles contain water, but the spaces are not totally saturated and cannot sustain a well.

Also known as: vadose zone, unsaturated zone
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Below you will find some terms to help you understand where your water comes from and how your well and pump operate. This can help you better communicate with your Marin County well drilling and water pump contractor.

aeration zone
The aeration zone sits above the saturated zone and just under the earth’s surface. In the aeration zone, some spaces between rock and soil particles contain water, but the spaces are not totally saturated and cannot sustain a well.

Also known as: vadose zone, unsaturated zone

annular space
The annular space is the space between the well’s casing and the walls of the hole bored to create the well. There are regulations on the size of the annular space. There are also regulations, depending on the depth of the well, on filling, or grouting, the annular space to a certain depth to prevent contamination.
Also known as: annulus

aquiclude
Geological matter that is impermeable and does not allow or hinders to the passage of groundwater.

aquifer
A geological structure underground that has the capacity to store and release water.

ASR
A technique used to direct surface water into the aquifer. The purpose is to store water in the aquifer for future use.

Also known as: aquifer storage and retrieval

artesian aquifer
A confined aquifer is one in which clay, dense rock, or other impermeable compounds hold the groundwater in place.

Also known as: confined aquifer, pressure aquifer

artesian well
An artesian well is one in which the natural pressure makes water in the well rise above the top of the aquifer. When the water in an artesian well reaches the surface of the land, it is called a flowing artesian well.

artificial recharge
Methods of storing water in the groundwater supply. Techniques may include irrigation or infiltration from a lake, stream, or well. It is a super set that includes ARS.

baseflow
Baseflow occurs when groundwater moves into a lake, stream, river, wetland, or other water feature on the land surface.

brackish water
Brackish water is a combination of salt and fresh water.

capillary water
Capillary water is water drawn up from the water table saturation zone to the aeration zone, using capillary action.

casing
The casing is the tube used to form the walls of the well. It can be plastic, concrete, steel. Be sure the casing material and thickness is identified in your contract.

cone of depression
A cone of depression is an underground area around a well that was previously part of the saturated area. Due to factors including how much water is pumped by the well, the area is no longer saturated and forms a cone shape.

depletion
Depletion occurs when water is taken from a reservoir or from groundwater faster than it is replaced.

drawdown
Drawdown occurs when the groundwater level drops as a result of pumping.

filtering
Filtering refers to the soil’s capacity to reduce the presence of substances using various methods. Sometimes solid particles are captured, other times elements are trapped on the surface of soil particles, and sometimes microbes can transform chemicals through biological processing.

giardiasis
When you drink water that is not filtered or chlorinated, you run the risk of being infected by the Giardia Intestinalis parasite. Symptoms include nausea, pain in the abdomen, and diarrhea and constipation, alternately.

groundwater
In the saturation zone, the water found between particles and cracks in rocks.

groundwater under the direct influence of surface water
When groundwater is under the direct influence of surface water, it is so near a river, lake, or other surface water that it can receive discharge directly from that source. This causes a possibility of contaminants from the surface water.

grouting
Grouting refers to the process of sealing the annulus. California law stipulates how deep the grouting must go for different kinds of wells.

Also known as: sealing the annular gap

hardness
Refers to how strong a concentration of calcium, magnesium, or other alkaline salts is found in the water.

infiltration
Movement of water from the surface to the layers below.

jet pump
A jet pump sits above the well and can be placed in the home or in a well house. Jet pumps use suction to move the water from the well. Jet pumps are used for shallow wells (25 feet or less). There are also jet pumps designed specifically for deeper wells (deeper than 25 feet).

pressure tank
A pressure tank is part of a water system. It is a container that holds both water and air. In the better quality pressurized tanks, the air is separated from the water with a bladder or diaphragm, or other device. This physical separation prevents the water from absorbing all the air, making the tank waterlogged. The air pressure in the tank is used to help move water through the pipes.

Also known as: pressurized tank, bladder tank

septic system
In a septic system, wastewater and sewage from the household are treated by separating the solids, which settle in a tank and decompose, from the liquid. Liquid is then absorbed by a drainage field.

Also known as: onsite wastewater treatment

surface water
Includes lakes, streams, rivers, floodwater, runoff, ponds – any water that is on top of the land, not under it.

submersible pump
A submersible pump is one in which the pump is placed inside the well’s casing so that it reaches to the top of the water.

water quality indicators
Water quality indicators refer to the findings from studying the chemical and biological composition of a water sample. In California, licensed laboratories conduct water quality tests.

Also known as: WQI

watershed
Watershed refers to the area from which runoff drains into a channel, reservoir, stream, lake, or other body of water.

Also known as: drainage basin

water table
The water table is point where saturation begins. It is the surface of the saturation zone.

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Frequently Asked Questions
FAQ for Water Pumps and Water Well Drilling Contractors

Q: Why choose a Diamond Certified Water Wells and Pumps Vendor?...

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Q: Why choose a Diamond Certified Water Wells and Pumps Vendor?
A: Diamond Certified helps you choose a water well and pump vendor with confidence by offering a list of top-rated local companies who have passed the country’s most in-depth rating process. Only water well and pump vendor rated Highest in Quality earn the prestigious Diamond Certified award. Most companies can’t pass the ratings. American Ratings Corporation also monitors every Diamond Certified company with ongoing research and ratings. And your purchase is backed by the Diamond Certified Performance Guarantee. So you’ll feel confident choosing a Diamond Certified water well and pump vendor.

Q: Where do contaminants in my water come from?
A: Some chemicals and minerals appear naturally in water. These may include uranium, arsenic, or radon. Other contaminants come from agriculture or livestock, for example, pesticides, fertilizers, animal feeding and biosolids. You can have your well tested to advise you of any contaminants. If you live in an area prone to contamination, you may want to have your water well tested on a regular basis to prevent illness or monitor particulates and contaminant levels in your water before they become a problem.

Q: Can I dig my own water well?
A: Digging your own well is not a good idea because of the many regulations and standards the state requires. You should work with a licensed contractor to dig your well.
Q: What kind of pump should I install on my water well?
A: Your pump should be installed by a contractor with a current license to install pumps. You will not know what size pump to install until you know the capacity of your well. The depth of your well will affect the choice of pump – for example, many deep wells in California use submersible pumps. The method used to create your well – drilling, cable tool, etc. - may also affect pump choice because of the size of the well opening created. Be guided by a trusted pump contractor in your choice of wells.

Q: Can I drill for water on my own land?
A: Many counties and cities in California require a permit before you can dig. You should check with the Department of Water Resources, which has a list of these regions and their permitting agencies.

Q: Why does my pump not produce as much water as in the past?
A: There can be a couple of reasons for a pump producing less water. If your region is undergoing drought, the water table may have dropped. Or, water may be blocked from entering the well by blocked screens. To solve the problem – other than drought – a water well contractor can clean the well. Cleaning may consist of using chemicals to dissolve slime or scale. Your contractor may use a brush to clean the well or may use a high-pressure technique or well surging to clean the well. A combination of methods may also be employed.

Q: Does using a well affect my normal tasks?
A: It could. When you have well water, you need to be constantly aware of preventing pollutants from entering the groundwater system. For example, if you are mixing chemicals, or cleaning paint, or performing similar tasks, do not put the hose itself inside the mixing container. This can pull chemicals into the water system. Instead, the hose head should always be kept out of the container and away from contact with any mixtures that contain elements you do not want in your drinking water.

Q: Why am I losing water pressure in the house?
A: There can be several reasons for loss of water pressure. One problem is the build up of scale in the pipes from hard water. If hard water is not the culprit, you can look at adding devices to your water system. You can add an additional pressure tank to store more water in the short term. You can also install a constant pressure valve between a pressure tank and the pump to regulate the flow of water. You can also install a variable speed pump that increases pumping based on demand. Stopping and starting are some of the major factors for pump burnout, so if you look for a variable pump, look for one with a slow start, which reduces the force on the pump and piping and can get rid of power surges.

Q: Who is responsible for the water quality in my well?
A: Ultimately, the private well owner is responsible for the water quality in the well. You should test as the well is being dug so that you know your water’s chemical and bacteriological composition. You then can take remediating steps as needed. You should test your water if you notice a significant change in taste or appearance. You should regularly test for bacteria and for chemicals, once a year for bacteria, and maybe once every five years for chemicals.

Q: My area has just suffered a flood. Does it matter to my well?
A: Yes, a flooded well may be contaminated by polluted water. You should not use the water for drinking or washing. You should get a contractor to clean the pump and after turning it back on, you should pump until the water is clear. If the water does not clear, you need to contact your state or local health department for advice.

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Consumer Agencies
Professional Agencies and Associations for Water Well Drilling Companies and Water Pump Installers

American Ground Water Trust (AGWT) (www.agwt.org/)
American Water Works Association (AWWA) (www.awwa.org/
California Department of Public Health (CDPH) (www.cdph.ca.gov/)
California Groundwater Association (CGA) (www.groundh2o.org/index.html)...

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American Ground Water Trust (AGWT) (www.agwt.org/)
American Water Works Association (AWWA) (www.awwa.org/
California Department of Public Health (CDPH) (www.cdph.ca.gov/)
California Groundwater Association (CGA) (www.groundh2o.org/index.html)
Centers for Disease Control and Prevention (CDC) (www.cdc.gov/)
Contractors’ State License Board (CSLB) (www.cslb.ca.gov/)

Department of Water Resources (DWR) (www.water.ca.gov/)
Groundwater Foundation (groundwater.org/)
National Drilling Association (NDA) (www.nda4u.com/)
National Environmental Services Center (NESC) / National Drinking Water Clearinghouse (NDWC) (www.nesc.wvu.edu/drinkingwater.cfm)
National Ground Water Association (NGWA) (www.ngwa.org/)
United States Environmental Protection Agency (EPA) (water.epa.gov/)
United States Geological Service (USGS) (ga.water.usgs.gov/edu/earthgwwells.html)
Water Systems Council (WSC) (www.watersystemscouncil.org/)
 

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Industry Information
Marin County Water Wells & Pumps Information
Popular Brands of Water Wells & Water PumpsTypes of Water Wells & Pump Services Available in Marin CountyCities Served Zip Codes Served
Lowara Water Pumpshigh pressure water pumpsAlmonte
Bel Marin Keys
Belvedere
Belvedere Tiburon
Black Point
Bolinas
Corte Madera
Dillon Beach
Dogtown
Fairfax
Forest Knolls
Greenbrae
Ignacio
Inverness
Kent Woodlands
Kentfield
Lagunitas
Larkspur
Lucas Valley
Marin City
Marinwood
Marshall
Mill Valley
Mission Rafael
Muir Beach
Muir Woods
Nicasio
Novato
Olema
Point Reyes Station
Ross
San Anselmo
San Geronimo
San Marin
San Quentin
San Rafael
Santa Venetia
Sausalito
Sleepy Hollow
Stinson Beach
Strawberry Point
Tamal
Tamalpais Valley
Terra Linda
Tiburon
Tomales
Woodacre
94901
94903
94904
94912
94913
94914
94915
94920
94924
94925
94929
94930
94933
94937
94938
94939
94940
94941
94942
94945
94946
94947
94948
94949
94950
94956
94957
94960
94963
94964
94965
94966
94970
94971
94973
94974
94976
94977
94978
94979
Shurflo Water Pumpwell water pump troubleshooting
Meziere Water Pumpwater well drilling
American Tank Companyhydraulic water pumps
Flotec Water Pumpsenvironmental drilling
Little Giant Pumpswater pump installation
Myers Water Pumpswater tank installation
Caravan Water Pumpswater treatment services
Pentax Water Pumpswell water testing services
Wayne Water Pumpsconstant pressure well pumps
Franklin Water Well Pumpsdeep water well pumps
PumpBiz Pumpspump tank systems
Whale Pumpsshallow well pumps
Sta-rite Water Pumpsresidential water wells & water well pumps
Aquatec Electric Pumpscommercial water wells & water well pumps
Davey Water Pumpssubmersible well pumps
Berkeley Pumpswell water drilling
Briggs & Stratton Pumpssolar water well pumps
Fill-Rite Transfer Pumpshand water pumps
Generic Pumpselectric water pumps
Graco Pumpswater transfer pumps
Jabsco Pumpscentrifugal water pumps
Lancaster Electric Water Well Pumpsportable water pumps