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Is Barstow, CA tap water safe?

4 utilities serve Barstow, by EPA’s records. Here is what EPA’s and California’s records show for each, against the legal limits and the stricter health goals.

Matched to your utility using EPA records.

The short answer

2 of the 4 utilities serving Barstow have a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and California’s records: Bar - Len MWC and Hi Desert MWC.

Golden State Water Co - Barstow, which serves the most people here, has 1 result above EPA’s new limit, which takes effect in 2029, 4 results above the health goal and 1 result above EPA’s health benchmark. The worst: PFOA at 5.7 ppt, above EPA’s new limit, which takes effect in 2029.

The water from Golden State Water Co - Barstow is hard to very hard depending on the source, 170 to 290 mg/L (9.9 to 17 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 Barstow’s ZIP codes, from EPA’s estimates.

What handles it

Each of these is certified, on a certifier’s listing, for a result above a line in Golden State Water Co - Barstow’s water, which serves the most people here. Another utility’s report names what handles its own results.

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Every claim, and more filters, in the full report

Water testing near Barstow

A utility tests the water it sends out. A test of your own tap shows what your pipes add, and on a private well it is the only test there is. It takes a lab California certifies.

The 3 labs California certifies closest to Barstow, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • Geo-Monitor, Inc

    Hesperia, CA · about 41 miles

    Certified for bacteria

    (760) 244-3481

  • BSK Associates - San Bernardino Analytical Laboratory

    San Bernardino, CA · about 66 miles

    Certified for bacteria

    (559) 497-2888

  • Clinical Laboratory of San Bernardino, Inc.

    Grand Terrace, CA · about 69 miles

    Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts, radioactivity

    (909) 825-7693

All 145 certified labs for California

ZIP codes in Barstow

Which ZIP codes are in Barstow: 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 Barstow

Other towns in San Bernardino County with a page of their own.

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