Is Bakersfield, CA tap water safe?
The short answer
8 of the 15 utilities serving Bakersfield have a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and California’s records: East Niles CSD, Greenfield County WD, Brock Mutual Water Company and 5 more.
Cws - Bakersfield, which serves the most people here, has 2 results above EPA’s new limit, which takes effect in 2029 and 3 results above the health goal. The worst: PFOS at 14 ppt, above EPA’s new limit, which takes effect in 2029.
The water from Cws - Bakersfield is soft to very hard depending on the source, 55 to 325 mg/L (3.2 to 19 grains per gallon). How California’s water compares.
A town can be served by more than one utility, and some homes are on private wells. The name on your water bill tells you which is yours, and your ZIP code narrows it down. They are listed by how many people each serves in Bakersfield’s ZIP codes, from EPA’s estimates.
- Open report
Cws - Bakersfield
California · serves 268,129 people · about 133,300 in Bakersfield
2 results above EPA’s new limit, which takes effect in 2029 and 3 results above the health goal. The worst: PFOS at 14 ppt, above EPA’s new limit, which takes effect in 2029. Hardness: soft to very hard depending on the source, 55 to 325 mg/L (3.2 to 19 grains per gallon).
No health-based violations since 2016
- Open report
City of Bakersfield
California · serves 171,108 people · about 67,300 in Bakersfield
1 result above EPA’s new limit, which takes effect in 2029 and 3 results above the health goal. The worst: PFOS at 8.4 ppt, above EPA’s new limit, which takes effect in 2029. Hardness: soft to very hard depending on the source, 3.9 to 552 mg/L (0.2 to 32.3 grains per gallon).
No health-based violations since 2016
- Open report
Vaughn WC Inc
California · serves 37,189 people · about 17,700 in Bakersfield
2 results above the health goal. The worst: Arsenic at 5.5 ppb, above the health goal. Hardness: soft to hard depending on the source, 5 to 155 mg/L (0.3 to 9.1 grains per gallon).
No health-based violations since 2016
- Open report
East Niles CSD
California · serves 32,517 people · about 9,600 in Bakersfield
1 result above the legal limit, 1 result above the limit’s level with no violation recorded, 2 results above the health goal and 1 result above EPA’s health benchmark. The worst: Haloacetic acids (HAA5) at 65.3 ppb, above the legal limit. Hardness: soft to very hard depending on the source, 36 to 290 mg/L (2.1 to 17 grains per gallon).
3 health-based violations since 2016
- Open report
Cws - North Garden
California · serves 27,634 people · about 6,500 in Bakersfield
1 result above EPA’s new limit, which takes effect in 2029, 3 results above the health goal and 1 result above EPA’s health benchmark. The worst: PFOS at 4.6 ppt, above EPA’s new limit, which takes effect in 2029. Hardness: soft to very hard depending on the source, 41 to 230 mg/L (2.4 to 13.5 grains per gallon).
No health-based violations since 2016
- Open report
Greenfield County WD
California · serves 11,590 people · about 2,200 in Bakersfield
2 results above the health goal. The worst: Arsenic at 7.0 ppb, above the health goal. Hardness: soft to hard depending on the source, 53 to 170 mg/L (3.1 to 9.9 grains per gallon).
14 health-based violations since 2016
- Open report
Stockdale Annex Mutual Water
California · serves 433 people · nearly all in Bakersfield
2 results above the health goal. The worst: Nitrate at 43 ppm, above the health goal. Hardness: moderately hard, typically 85 mg/L (5 grains per gallon).
No health-based violations since 2016
- Open report
Brock Mutual Water Company
California · serves 462 people · about 200 in Bakersfield
1 result above the legal limit and 2 results above the health goal. The worst: Nitrate at 13 ppm, above the legal limit. Hardness: moderately hard, typically 92 mg/L (5.4 grains per gallon).
29 health-based violations since 2016
- Open report
Maher Mutual Water Company
California · serves 140 people · nearly all in Bakersfield
1 result above the limit’s level with no violation recorded and 1 result above the health goal. The worst: Arsenic at 18.2 ppb, above the limit’s level, no violation. Hardness: soft, 58 mg/L (3.4 grains per gallon).
14 health-based violations since 2016
- Open report
Victory Mutual Water Company
California · serves 740 people · about 120 in Bakersfield
1 result above the limit’s level with no violation recorded and 3 results above the health goal. The worst: Uranium at 32 ppb, above the limit’s level, no violation. Hardness: very hard, typically 310 mg/L (18.1 grains per gallon).
No health-based violations since 2016
5 more utilities in Bakersfield
By EPA’s estimate, each serves fewer people in Bakersfield than those above.
- Stockdale Mutual Water Co.serves 200 people · under 100 in Bakersfield · 1 health-based violation since 2016
- El Adobe Poa, Inc.serves 200 people · under 100 in Bakersfield · 19 health-based violations since 2016
- Stockdale Ranchos Mutual Water Coserves 313 people · under 100 in Bakersfield · no health-based violations since 2016
- Oasis Property Owners Associationserves 100 people · under 100 in Bakersfield · 13 health-based violations since 2016
- San Joaquin Estates Mutual Water Companyserves 165 people · under 100 in Bakersfield · 36 health-based violations since 2016
What handles it
Each of these is certified, on a certifier’s listing, for a result above a line in Cws - Bakersfield’s water, which serves the most people here. Another utility’s report names what handles its own results.
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Countertop reverse osmosis
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 4, 2026
Certified for: PFOS, PFOA, Arsenic, Lead
Aquasana SmartFlow Reverse Osmosis (AQ-SFRO2)
Under-sink reverse osmosis
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 9, 2026
Certified for: PFOS, PFOA, Arsenic, Lead
Brondell Capella RC250 Reverse Osmosis System
Under-sink reverse osmosis
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 9, 2026
Certified for: PFOS, PFOA, Arsenic, Lead
Water testing near Bakersfield
The 3 labs California certifies closest to Bakersfield, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Zalco Laboratories, Inc.
Bakersfield, CA · about 5 miles
Certified for bacteria, nitrate, metals, minerals and other inorganics, organic chemicals, disinfection byproducts
Pace Analytical Services, LLC dba BC Laboratories, Inc.
Bakersfield, CA · about 5 miles
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts, radioactivity
BSK Associates - Bakersfield Analytical Laboratory
Bakersfield, CA · about 8 miles
Certified for bacteria
Which ZIP codes are in Bakersfield: Census 2020 relationship files. Which utilities serve them, and how many people: EPA SDWIS and EPA’s service area map. Each utility’s results: EPA UCMR 5, EPA SDWIS, and EPA’s and the state’s compliance monitoring, as its report lists them. How they are measured: methodology. Certified labs: California State Water Resources Control Board, ELAP accredited laboratories and their fields of accreditation; distances from the Census 2020 ZIP code tabulation area gazetteer.
Near Bakersfield
Other towns in Kern County with a page of their own.
What to do next
- Read Cws - Bakersfield’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- Filters for PFOSRanked by certification and what they cost over five years.The best water filters for PFAS, ranked
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water