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Is St. Peters, MO tap water safe?

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

Matched to your utility using EPA records.

The short answer

None of the 3 utilities serving St. Peters has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and CDC’s records.

St Peters PWS, which serves the most people here, has 1 result above EPA’s new limit, which takes effect in 2029, 1 result above the health goal and 1 result above EPA’s health benchmark. The worst: PFOA at 4.9 ppt, above EPA’s new limit, which takes effect in 2029.

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. Peters’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 Peters PWS’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. Peters

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 Missouri certifies.

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

  • R.M. Wester and Associates Inc.

    St. Peters, MO · about 4 miles

    Certified for bacteria

    (636) 928-9628

  • City of St. Louis-Howard Bend Laboratory

    Chesterfield, MO · about 9 miles

    Certified for bacteria, nitrate, minerals and other inorganics, organic chemicals

    (314) 256-5723

  • Missouri American Water Co.-St. Louis County

    Chesterfield, MO · about 9 miles

    Certified for bacteria

    (314) 469-6050

Missouri State Public Health Laboratory: Coliform and E. coli testing for private wells and other private drinking water sources, in kits from your local public health agency. A free state courier can carry the sample to the lab overnight. The handling fee is $10, by check or money order. Private Drinking Water Bacteriological Testing, Missouri Department of Health and Senior Services.

All 64 certified labs for Missouri

ZIP codes in St. Peters

Which ZIP codes are in St. Peters: 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: Missouri DNR, certified microbiological and chemical laboratories; distances from the Census 2020 ZIP code tabulation area gazetteer.

Near St. Peters

Other towns in St. Charles County with a page of their own.

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