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Is Mashantucket, CT tap water safe?

2 utilities serve Mashantucket, 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

2 of the 2 utilities serving Mashantucket have a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and CDC’s records: Ledyard Wpca - Ledyard Center and Mashantucket Pequot Water System.

Ledyard Wpca - Ledyard Center, which serves the most people here, has 1 result above the legal limit. The worst: Total trihalomethanes (TTHM) at 78.9 ppb, above the legal limit.

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 Mashantucket’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 Ledyard Wpca - Ledyard Center’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 Mashantucket

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 Connecticut certifies.

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

  • Eastern Analytical Laboratory, Inc.

    Old Saybrook, CT · about 23 miles

    Certified for bacteria, nitrate, metals, minerals and other inorganics

    (860) 388-2378

  • CorrTech Corrosion Laboratory

    Deep River, CT · about 26 miles

    Certified for minerals and other inorganics

    (860) 526-2610

  • Eurofins Rhode Island

    North Kingstown, RI · about 29 miles

    Certified for nitrate, metals, minerals and other inorganics

    (413) 340-3947

All 86 certified labs for Connecticut

ZIP codes in Mashantucket

Which ZIP codes are in Mashantucket: 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: Connecticut DPH, approved commercial laboratories certified to test drinking water; distances from the Census 2020 ZIP code tabulation area gazetteer.

Near Mashantucket

Other towns in New London County with a page of their own.

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