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Is Yosemite Lakes, CA tap water safe?

7 utilities serve Yosemite Lakes, 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 7 utilities serving Yosemite Lakes have a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and California’s records: Yosemite Spring Park Util Co and Skp Park of the Sierras Inc.

Yosemite Spring Park Util Co, which serves the most people here, has 2 results above EPA’s new limit, which takes effect in 2029, 1 result above the limit’s level with no violation recorded, 1 result above the health goal and 1 result above EPA’s health benchmark. The worst: Uranium at 45.4 ppb, above the limit’s level, no violation.

The water from Yosemite Spring Park Util Co is moderately hard to very hard depending on the source, 71 to 270 mg/L (4.2 to 15.8 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 Yosemite Lakes’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 Yosemite Spring Park Util Co’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 Yosemite Lakes

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

  • SGS North America, Inc.

    Clovis, CA · about 25 miles

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

    (559) 862-2118

  • Dellavalle Laboratory, Inc.

    Fresno, CA · about 31 miles

    Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics, radioactivity

    (559) 233-6129

  • BSK Associates

    Fresno, CA · about 32 miles

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

    (559) 497-2888

All 145 certified labs for California

ZIP codes in Yosemite Lakes

Which ZIP codes are in Yosemite Lakes: 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 Yosemite Lakes

Other towns in Madera County with a page of their own.

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