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Is Onset, MA tap water safe?

2 utilities serve Onset, by EPA’s records. Here is what EPA’s and Massachusetts’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 Onset have a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and Massachusetts’s records: Onset Fire Districtwater Dept. and Wareham Fire District.

Onset Fire Districtwater Dept., which serves the most people here, has 1 result above EPA’s new limit, which takes effect in 2029 and 1 result above the health goal. The worst: PFOS at 7.1 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 Onset’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 Onset Fire Districtwater Dept.’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 Onset

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 Massachusetts certifies.

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

  • Envirotech Laboratories Inc.

    Sandwich, MA · about 10 miles

    Certified for bacteria, nitrate, minerals and other inorganics

    (508) 888-6460

  • Eurofins Providence (AB)

    Middleborough, MA · about 13 miles

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

    (508) 946-2225

  • New Bedford Health Department Lab

    New Bedford, MA · about 17 miles

    Certified for bacteria

    (508) 991-6199

All 81 certified labs for Massachusetts

ZIP codes in Onset

Which ZIP codes are in Onset: 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: MassDEP Online Searchable Laboratory Certification Listing, potable water; distances from the Census 2020 ZIP code tabulation area gazetteer.

Near Onset

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

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