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Is Casper Mountain, WY tap water safe?

2 utilities serve Casper Mountain, by EPA’s records. Here is what EPA’s and Wyoming’s records show for each, against the legal limits and the stricter health goals.

Matched to your utility using EPA records.

The short answer

Neither of the 2 utilities serving Casper Mountain has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and Wyoming’s records.

City of Casper, which serves the most people here, has 1 result above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 56.7 ppb, above EPA’s health benchmark. Health goals are stricter than legal limits and are not enforced.

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 Casper Mountain’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 Casper’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 Casper Mountain

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 Wyoming certifies.

The 2 labs Wyoming certifies closest to Casper Mountain, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • Energy Laboratories Inc

    Casper, WY · under a mile

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

    (307) 235-0515

  • Energy Laboratories Inc

    Gillette, WY · about 70 miles

    Certified for bacteria

    (307) 686-7175

Wyoming Public Health Laboratory: Total coliform and E. coli testing that homeowners can use for their wells. New customers fill out the lab's customer form to open an account. Water Testing, Wyoming Department of Health.

All 12 certified labs for Wyoming

ZIP codes in Casper Mountain

Which ZIP codes are in Casper Mountain: 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: EPA Region 8, certified drinking water laboratories in Wyoming; distances from the Census 2020 ZIP code tabulation area gazetteer.

Near Casper Mountain

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

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