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Is St. George, UT tap water safe?

3 utilities serve St. George, by EPA’s records. Here is what EPA’s and Utah’s records show for each, against the legal limits and the stricter health goals.

Matched to your utility using EPA records.

The short answer

1 of the 3 utilities serving St. George has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and Utah’s records: Diamond Valley Acres.

St George City Water System, which serves the most people here, has 1 result above the limit’s level with no violation recorded, 2 results above the health goal and 1 result above EPA’s health benchmark. The worst: Arsenic at 12.8 ppb, above the limit’s level, no violation. Health goals are stricter than legal limits and are not enforced.

The water from St George City Water System is soft to very hard depending on the source, 46 to 370 mg/L (2.7 to 21.6 grains per gallon). How Utah’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 St. George’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 St George City Water System’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 St. George

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 Utah certifies.

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

  • Southwest Utah Public Health Laboratory

    St. George, UT · about 1 mile

    Certified for bacteria, nitrate

    (435) 986-2598

  • St. George RWRF Laboratory

    St. George, UT · about 5 miles

    Certified for bacteria

    (435) 627-4269

  • Southern Utah University Water Laboratory

    Cedar City, UT · about 48 miles

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

    (435) 586-7914

All 60 certified labs for Utah

ZIP codes in St. George

Which ZIP codes are in St. George: 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: Utah Department of Environmental Quality, Division of Drinking Water, certified laboratories; distances from the Census 2020 ZIP code tabulation area gazetteer.

Near St. George

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

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