Is Wofford Heights, CA tap water safe?
The short answer
2 of the 5 utilities serving Wofford Heights have a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and California’s records: Sierra Bella Mutual Water Company and R.S. Mutual Water Company.
Cws - Split Mountain Water System, which serves the most people here, has 2 results above the health goal. The worst: Uranium at 27.8 ppb, above the health goal. Health goals are stricter than legal limits and are not enforced.
The water from Cws - Split Mountain Water System is moderately hard to hard depending on the source, 100 to 140 mg/L (5.8 to 8.2 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 Wofford Heights’s ZIP codes, from EPA’s estimates.
- Open report
Cws - Split Mountain Water System
California · serves 203 people · under 100 in Wofford Heights
2 results above the health goal. The worst: Uranium at 27.8 ppb, above the health goal. Hardness: moderately hard to hard depending on the source, 100 to 140 mg/L (5.8 to 8.2 grains per gallon).
No health-based violations since 2016
- Open report
Pinebrook Community Water Well
California · serves 68 people · under 100 in Wofford Heights
1 result above the health goal. The worst: Uranium at 0.71 ppb, above the health goal. Hardness: very hard, typically 260 mg/L (15.2 grains per gallon).
No health-based violations since 2016
- Open report
Alta Sierra Mutual Water Co.
California · serves 22 people · under 100 in Wofford Heights
1 result above the health goal. The worst: Uranium at 6.6 ppb, above the health goal. Hardness: moderately hard to hard depending on the source, 90 to 130 mg/L (5.2 to 7.6 grains per gallon).
No health-based violations since 2016
- Open report
Sierra Bella Mutual Water Company
California · serves 30 people · under 100 in Wofford Heights
1 result above the health goal. The worst: Lead at 2.6 ppb, above the health goal. Hardness: moderately hard to hard depending on the source, 78 to 140 mg/L (4.6 to 8.2 grains per gallon).
1 health-based violation since 2016
- Open report
R.S. Mutual Water Company
California · serves 35 people · under 100 in Wofford Heights
3 results above the legal limit and 1 result above the health goal. The worst: Arsenic at 31.5 ppb, above the legal limit. Hardness: very hard, 375 mg/L (21.9 grains per gallon).
73 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 - Split Mountain Water System’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 Wofford Heights
The 3 labs California certifies closest to Wofford Heights, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Pace Analytical Services, LLC dba BC Laboratories, Inc.
Bakersfield, CA · about 37 miles
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts, radioactivity
Zalco Laboratories, Inc.
Bakersfield, CA · about 37 miles
Certified for bacteria, nitrate, metals, minerals and other inorganics, organic chemicals, disinfection byproducts
BSK Associates - Bakersfield Analytical Laboratory
Bakersfield, CA · about 42 miles
Certified for bacteria
ZIP codes in Wofford Heights
Which ZIP codes are in Wofford Heights: 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 Wofford Heights
Other towns in Kern County with a page of their own.
What to do next
- Read Cws - Split Mountain Water System’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- About UraniumWhat it does to health, where it comes from, and the certification claim that addresses it.About Uranium
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water