California Well Water Testing and Treatment Contractors

Find qualified Well Water Testing and Treatment contractors in California using our contractor lookup tool. Learn more about NGWA Contractor Certifications here.

Near
Sort by

Farm Pump & Irrigation Co

Contractors Company
535 N Shafter Ave PO Box 1477
Shafter, CA 93263-1900
(661) 589-6901

Central Valley Pump Inc

Contractors Company
2930 Greer Rd PMB 196
Turlock, CA 95382
(209) 874-9972

Calwater Drilling Company Inc

Contractors Company
300 S Kilroy Rd
Turlock, CA 95380-9519
(209) 632-7932

Piute Pump Co Inc

Contractors Company
PO Box 2359
Lake Isabella, CA 93240
United States

Bakersfield Well & Pump Co

Contractors Company
7212 Fruitvale Ave
Bakersfield, CA 93308-9529
(661) 393-9661

Tylor McMillans Well Service, LLC

Contractors Company
9530 Hageman Rd Ste B349
Bakersfield, CA 93312
(916) 761-5224

Don Pedro Pump Inc

Contractors Company
PO Box 1038
Hughson, CA 95326-1038
(209) 632-3161

South Valley Pump Company

Contractors Company
PO Box 82543
Bakersfield, CA 93380-2543

CJ Logan Pump & Electric

Contractors Company
PO Box 20365
Bakersfield, CA 93390-0365
(661) 398-1244

Well Rehabilitation Services Inc

Contractors Company
PO Box 80365
Bakersfield, CA 93380-0365
(661) 587-0914

Johnson Pump Company

Contractors Company
PO Box 2482
Hollister, CA 95024-2482
(831) 537-7006

Hennings Bros Drilling Co Inc

Contractors Company
1930 Ladd Rd
Modesto, CA 95356-9142
United States
(209) 545-1185

Pacific Coast Well Drilling Inc

Contractors Company
PO Box 184
Templeton, CA 93465-0184
(805) 434-5543

Quality Service Inc

Contractors Company
2996 Mchenry ave
Escalon, CA 95320
(209) 838-7842

Filipponi-Thompson Drilling Inc

Contractors Company
PO Box 845
Atascadero, CA 93423-0845
United States
(805) 466-1271

Frequently Asked Questions

When should I have my well water tested?

The National Ground Water Association (NGWA) recommends well owners test their water at least annually for bacteria, nitrates, and any contaminants of local concern. More frequent testing should be considered if:

  • There is a change in the taste, odor, or appearance of the well water, or if a problem occurs such as a broken well cap, inundation by floodwaters, or a new contamination source
  • The well has a history of bacterial contamination
  • The septic system has recently malfunctioned
  • Family members or house guests have recurrent incidents of gastrointestinal illness
  • An infant is living in the home, or
  • To monitor the efficiency and performance of home water treatment equipment.

Read more

What can impact groundwater quality?

Forty-seven percent of the United States depend on groundwater for their basic drinking water supply. Having a basic understanding about groundwater quality will help ensure that your well is supplying potable water for your household.

Along with human activities, water quality is affected by a combination of natural processes. Most relate to chemical compositions underground. However, other factors such as biological, physical, and radiological conditions can affect water quality as well.

Read more

How is a well disinfected?

Properly constructed and maintained water well systems are designed to keep microorganisms such as bacteria, viruses, and protozoa from getting inside the well system and into the water. When a water test indicates the presence of microorganisms in a well, disinfection of the well system is recommended along with some level of inspection.

Read more

California Groundwater and Water Well Statistics

Few states can accurately or confidentially determine how many residential wells are in place. For each region, the American Housing Survey by the U.S. Census provides regional data.

California is found in the West, along with these other states: Alaska, Hawaii, Washington, Oregon, California, Idaho, Utah, Nevada, Arizona, New Mexico, Colorado, Wyoming, and Montana.

The last American Housing Survey Census indicates this region had 1,540,0002 households served by residential wells, with an average of 2.973 persons per household. The USGS estimates the population of self-supplied water supply users in California to be 1,440,000 for which groundwater is 85% of their water source.

  • 2,081 community water systems use groundwater for 7,286,000 people
  • 1,393 non-community, non-transient water systems use groundwater for 371,400 people
  • 2,874 non-community, transient water systems use groundwater for 603,200 people
  • 59,500 irrigation wells used serving 23,600 farms and 3,860,000 acres

Well Water Testing and Treatment Articles and Resources

Does My Water Well Need Treatment? By Gary L. Hix, R.G., CWD/PI Have you ever asked yourself: “Does my well water need treatment?” The question is not one you can answer if you have not had your water tested recently. You should ask yourself instead: “When was the last time I had my water tested?” If the answer to this question […]

PFAS and Private Well Owners: What You Need to Know NGWA published PFAS and Private Well Owners: What You Need to Know, a two-page fact sheet for home owners concerned about PFAS. Written in easy-to-understand language by groundwater professionals, it explains what PFAS are, how to test wells for PFAS, treatment options, and more.