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Is Carter, MT tap water safe?

2 utilities serve Carter, by EPA’s records. Here is what EPA’s and Montana’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 2 utilities serving Carter have a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and Montana’s records: Carter Chouteau Co Water Dist and Twin Hills Colony Inc.

Carter Chouteau Co Water Dist, which serves the most people here, has 2 results above the health goal. The worst: Arsenic at 2.1 ppb, above the health goal. 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.

What handles it

Each of these is certified, on a certifier’s listing, for a result above a line in Carter Chouteau Co Water Dist’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 Carter

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 Montana certifies.

No lab Montana certifies is within 75 miles of Carter on the state’s list. Some take samples by mail; the state’s page lists them all.

Montana State Environmental Laboratory: Private well testing packages for bacteria, metals, nutrients, anions, organic chemicals and more, open to the public. Samples can be mailed, sent by the lab's free courier, or dropped off at the lab. Environmental Laboratory, Montana Department of Public Health and Human Services.

All 36 certified labs for Montana

ZIP codes in Carter

Which ZIP codes are in Carter: 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.

Near Carter

Towns nearby with a page of their own.

What to do next