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Why Trust Diamond Certified Water Well Companies Rated Highest in Quality?

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) 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.

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Charlie Judson is a veteran of the water treatment industry and consultant for Weeks Drilling & Pump Company, a Diamond Certified company since 2004. He can be reached at (707) 823-3184 or [email protected]

Charlie Judson

diamond certified contributor profile and expert article

Charlie Judson: A Life Well Spent

By Matt Solis, Diamond Certified Resource Reporter

SEBASTOPOL – Charlie Judson didn’t expect to find a career in water treatment when he was a young geology student at Santa Rosa Junior College—like many students, he was simply looking for a way to make some extra money when he stumbled upon an industry that would eventually become his life’s work. “I answered an ad for a company that was looking for someone to install water filters, which I had some experience with, and I ended up working there for a couple years and learning the basics of the business,” he remembers. “I found the water quality part of the job extremely interesting and challenging, both in terms of what makes water safe for human consumption and what makes it usable for industrial processes. From there, I did some consulting work and managed a water treatment dealership in Santa Rosa for about five years. I came to Weeks in 1984…and I’ve been here ever since.”

Much like his profession, Charlie’s permanent Sonoma County residence was the result of a serendipitous series of events rather than a predetermined plan. “My family moved around a lot when I was young, so when I landed in Sonoma County in 1974 it was quite by accident,” he explains. “I was en route to Humboldt State because I’d been accepted in their geology program, and I stopped to visit my sister in Sebastopol first. She said, ‘Why would you go to the trouble of doing your undergraduate work all the way up there when we have this great junior college?’ So that’s how I ended up here, and I just never left.”

Charlie’s initial reasons for staying in Sonoma County were purely practical, but after living in the Bay Area for nearly four decades, he says he’s come to appreciate many other aspects of Northern California life. “I love the highly variable climate and easy access to remote places for hiking and camping. My family and I do a lot of river rafting trips—we’ve rafted the Eel River for the past 25 years, and it’s one of our favorite annual traditions. Even though there are about 8 million people living in the Bay Area, we can drive six hours, spend four or five days on the river and not see another soul.”

Charlie’s family doesn’t just accompany him on various outdoor excursions—his wife and two sons have all been involved with Weeks Drilling & Pump Company’s operations over the years. “My oldest son works for us as a water treatment facility operator, and my wife is in charge of compliance issues for regulated water systems that we deal with,” he explains. “Sebastopol actually has the highest per capita number of private wells of any zip code in California, so there’s plenty of work for a company like ours, and I’m glad my family has been able to experience that.”

When he’s not helping homeowners and businesses regulate their water systems, Charlie spends as much time as possible exploring his other passion: landscape photography. “I’ve been photographing landscapes for a long time, and ever since I moved to digital 10 years ago, I’m able to do the entire process myself, from snapping the shutter to making the print,” he says. “I particularly enjoy making large prints, and I have many displayed throughout my house. In fact, my wife jokes that I only shoot in order to feed my printing habit!”

Charlie is content with the stability of Weeks Drilling & Pump Company and the prospect of working in Sonoma County for many years, but when it comes to the subject of retirement, he has some specifics in mind. “I would grab my wife and dog, jump into our camper, and head for the desert,” he laughs. “Of course, I can’t forget the camera. Actually, I might have to come back from the desert to make some prints!”

Ask Me Anything!

Q: Who is your favorite musician?
A: I love Bob Dylan in all his incarnations. I also like Eric Clapton and ’80s rock like Bon Jovi.

Q: Are you an early bird or a night owl?
A: An early bird. I always get up early, and I’m never the last one at the party.

Q: If you could time travel, would you go to the past or the future?
A: Definitely the future—that’s where the unknown is. There may be a lot we don’t know about the past, but it’s over and done with. I would much rather shoot forward and be surprised.

Q: What’s your favorite holiday?
A: Thanksgiving. Even though my family is scattered these days, we always try to get together for Thanksgiving dinner.

 Q: If you had a theme song, what would it be?
A: “Don’t Worry, Be Happy” by Bobby McFerrin…although that’s more of a theme to live up to than one I’ve been able to achieve!

Q: Dogs or cats?
A: Dogs. We have two Jack Russell Terriers named Jade and Chico and a Border Collie named Levi.

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Factors for Well Placement


SEBASTOPOL — When it comes to drilling a well, proper placement is key. There are several factors that go into determining well placement, including the following: Setbacks A setback is the municipally mandated distance between a structure or installation (such… Read more

How To Tell If Your Well Water is Safe


SEBASTOPOL — If your water is supplied by a well, there are some basic health and safety issues you need to be aware of. First and foremost, the only way to know that your water is truly safe is to have… Read more

Expert Video Tip

Video: Factors for Well Location

Complete Video Transcription:

SEBASTOPOL — Host, Sarah Rutan: When choosing a location for drilling a well, you need to take several factors into consideration. To learn more, we’re in Sebastopol… Read more




  • Goulds

  • Grundfos

  • Hydromatic

  • Myers

Lowara Water Pumps
Shurflo Water Pump
Meziere Water Pump
American Tank Company
Flotec Water Pumps
Little Giant Pumps
Myers Water Pumps
Caravan Water Pumps
Pentax Water Pumps
Wayne Water Pumps
Franklin Water Well Pumps
PumpBiz Pumps
Whale Pumps
Sta-rite Water Pumps
Aquatec Electric Pumps
Davey Water Pumps
Berkeley Pumps
Briggs & Stratton Pumps
Fill-Rite Transfer Pumps
Generic Pumps
Graco Pumps
Jabsco Pumps
Lancaster Electric Water Well Pumps

high pressure water pumps
well water pump troubleshooting
water well drilling
hydraulic water pumps
environmental drilling
water pump installation
water tank installation
water treatment services
well water testing services
constant pressure well pumps
deep water well pumps
pump tank systems
shallow well pumps
residential water wells & water well pumps
commercial water wells & water well pumps
submersible well pumps
well water drilling
solar water well pumps
hand water pumps
electric water pumps
water transfer pumps
centrifugal water pumps
portable water pumps

Bel Marin Keys
Belvedere Tiburon
Black Point
Corte Madera
Dillon Beach
Forest Knolls
Kent Woodlands
Lucas Valley
Marin City
Mill Valley
Mission Rafael
Muir Beach
Muir Woods
Point Reyes Station
San Anselmo
San Geronimo
San Marin
San Quentin
San Rafael
Santa Venetia
Sleepy Hollow
Stinson Beach
Strawberry Point
Tamalpais Valley
Terra Linda


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)…

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/)

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.

  • 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 In Person
Speaking With Marin County Well Drilling Contractors in Person

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. 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.

    • 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.

    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.

    • 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.

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

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.

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.


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

Franklin Electric

Submersible and jet pumps, among others.


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’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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Glossary Of Terms
Glossary of Water Well and Water Pump Terms

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

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

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

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

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 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.

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

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

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.

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.

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 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

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

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 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?

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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