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Is Leona Valley, CA tap water safe?

11 utilities serve Leona Valley, 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 11 utilities serving Leona Valley have a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and California’s records: White Fence Farms MWC No. 1 and Sunnyside Farms Mutual Water Company.

Los Angeles Cwwd 40 Reg 4 & 34 Lancaster, which serves the most people here, has 3 results above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 17.1 ppb, above EPA’s health benchmark. Health goals are stricter than legal limits and are not enforced.

The water from Los Angeles Cwwd 40 Reg 4 & 34 Lancaster is soft to very hard depending on the source, 14 to 240 mg/L (0.8 to 14 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 Leona Valley’s ZIP codes, from EPA’s estimates.

1 more utility in Leona Valley

By EPA’s estimate, each serves fewer people in Leona Valley than those above.

What handles it

Each of these is certified, on a certifier’s listing, for a result above a line in Los Angeles Cwwd 40 Reg 4 & 34 Lancaster’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 Leona Valley

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 Leona Valley, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • Pat-Chem Laboratories

    San Fernando, CA · about 25 miles

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

    (800) 400-5227

  • EMSL Analytical, Inc. (LA Testing)

    South Pasadena, CA · about 34 miles

    Certified for bacteria, asbestos

    (323) 254-9960

  • Positive Lab Service

    Los Angeles, CA · about 40 miles

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

    (213) 745-5312

All 145 certified labs for California

ZIP codes in Leona Valley

Which ZIP codes are in Leona Valley: 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 Leona Valley

Other towns in Los Angeles County with a page of their own.

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