Is Rosedale, CA tap water safe?
The short answer
1 of the 10 utilities serving Rosedale has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and California’s records: Enos Lane Public Utility District.
Vaughn WC Inc, which serves the most people here, has 2 results above the health goal. The worst: Arsenic at 5.5 ppb, above the health goal. Health goals are stricter than legal limits and are not enforced.
The water from Vaughn WC Inc is soft to hard depending on the source, 5 to 155 mg/L (0.3 to 9.1 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 Rosedale’s ZIP codes, from EPA’s estimates.
- Open report
Vaughn WC Inc
California · serves 37,189 people · about 5,300 in Rosedale
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
City of Bakersfield
California · serves 171,108 people · about 3,000 in Rosedale
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
Cws - North Garden
California · serves 27,634 people · about 1,300 in Rosedale
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
Western Acres Mutual Water Company
California · serves 380 people · nearly all in Rosedale
2 results above the health goal. The worst: Arsenic at 0.9 ppb, above the health goal. Hardness: soft to hard depending on the source, 42 to 130 mg/L (2.4 to 7.6 grains per gallon).
No health-based violations since 2016
- Open report
Stockdale Ranchos Mutual Water Co
California · serves 313 people · under 100 in Rosedale
Nothing in its records is above a health goal. Hardness: moderately hard, 93 mg/L (5.4 grains per gallon).
No health-based violations since 2016
- Open report
Enos Lane Public Utility District
California · serves 270 people · under 100 in Rosedale
2 results above the health goal. The worst: Uranium at 14.9 ppb, above the health goal. Hardness: soft to moderately hard depending on the source, 14 to 105 mg/L (0.8 to 6.1 grains per gallon).
2 health-based violations since 2016
- Open report
Allen Road Mutual Water System
California · serves 195 people · under 100 in Rosedale
1 result above the health goal. The worst: Uranium at 6.7 ppb, above the health goal. Hardness: moderately hard, 74 mg/L (4.3 grains per gallon).
No health-based violations since 2016
- Open report
St. Clair Ranchos Mutual Water Co.
California · serves 105 people · under 100 in Rosedale
Nothing in its records is above a health goal. Hardness: moderately hard, 72 mg/L (4.2 grains per gallon).
No health-based violations since 2016
- Open report
Harvest Moon Mutual Water Co
California · serves 138 people · under 100 in Rosedale
2 results above the health goal. The worst: Uranium at 16.4 ppb, above the health goal. Hardness: moderately hard to hard depending on the source, 110 to 135 mg/L (6.4 to 7.9 grains per gallon).
No health-based violations since 2016
- Open report
Manon Manor Mutual Water Company
California · serves 200 people · under 100 in Rosedale
1 result above the health goal. The worst: Uranium at 5.4 ppb, above the health goal. Hardness: moderately hard, 107 mg/L (6.2 grains per gallon).
No 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 Vaughn WC Inc’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: Arsenic
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: Arsenic
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: Arsenic
Water testing near Rosedale
The 3 labs California certifies closest to Rosedale, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
BSK Associates - Bakersfield Analytical Laboratory
Bakersfield, CA · about 5 miles
Certified for bacteria
Zalco Laboratories, Inc.
Bakersfield, CA · about 11 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 11 miles
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts, radioactivity
ZIP codes in Rosedale
Which ZIP codes are in Rosedale: 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 Rosedale
Other towns in Kern County with a page of their own.
What to do next
- Read Vaughn WC Inc’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- Filters for ArsenicRanked by certification and what they cost over five years.The best reverse osmosis systems, ranked
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water