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Is Manteca, CA tap water safe?

4 utilities serve Manteca, 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 Manteca have a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and California’s records: San Joaquin County - Raymus Village and Cardoza Villa Corp.

City of Manteca, which serves the most people here, has 2 results above EPA’s new limit, which takes effect in 2029 and 4 results above the health goal. The worst: PFHxS at 19 ppt, above EPA’s new limit, which takes effect in 2029.

The water from City of Manteca is moderately hard to very hard depending on the source, 73 to 330 mg/L (4.3 to 19.3 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 Manteca’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 City of Manteca’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 Manteca

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

  • Institute of Environmental Health, Inc. dba IEH-JL Analytical

    Modesto, CA · about 10 miles

    Certified for bacteria, nitrate, minerals and other inorganics

    (209) 538-8111

  • Fruit Growers Laboratory, Inc.

    Stockton, CA · about 10 miles

    Certified for bacteria

    (209) 942-0182

  • San Joaquin County Public Health Laboratory

    Stockton, CA · about 12 miles

    Certified for bacteria

    (209) 468-3460

All 145 certified labs for California

ZIP codes in Manteca

Which ZIP codes are in Manteca: 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 Manteca

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

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