Is Winterhaven, CA tap water safe?
The short answer
2 of the 2 utilities serving Winterhaven have a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and California’s records: Winterhaven County Water District and Gold Rock Ranch.
Winterhaven County Water District, which serves the most people here, has 1 result above the health goal. The worst: Uranium at 0.32 ppb, above the health goal. Health goals are stricter than legal limits and are not enforced.
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.
- Open report
Winterhaven County Water District
California · serves 394 people · based in Winterhaven
1 result above the health goal. The worst: Uranium at 0.32 ppb, above the health goal.
1 health-based violation since 2016
- Open report
Gold Rock Ranch
California · serves 45 people · based in Winterhaven
3 results above the health goal. The worst: Arsenic at 6.2 ppb, above the health goal. Hardness: hard to very hard depending on the source, 150 to 280 mg/L (8.8 to 16.4 grains per gallon).
1 health-based violation since 2016
Water testing near Winterhaven
The 3 labs California certifies closest to Winterhaven, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Brawley Analytical, Inc.
Brawley, CA · about 44 miles
Certified for bacteria, minerals and other inorganics
Imperial County Public Health Laboratory
El Centro, CA · about 46 miles
Certified for bacteria
Babcock Laboratories, Inc.
El Centro, CA · about 47 miles
Certified for bacteria
ZIP codes in Winterhaven
Which ZIP codes are in Winterhaven: 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 Winterhaven
Other towns in Imperial County with a page of their own.
What to do next
- Read Winterhaven County Water District’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