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Is Lexington, MA tap water safe?

Lexington Water Dept. (MWRA) serves Lexington, by EPA’s records. Here is what EPA’s and Massachusetts’s records show for it, against the legal limits and the stricter health goals.

Matched to your utility using EPA records.

The short answer

Lexington Water Dept. (MWRA) serves Lexington. In EPA’s and Massachusetts’s records it has 1 result above the health goal, and no health-based violation since 2016.

The worst: Lead at 1.8 ppb, above the health goal. Health goals are stricter than legal limits and are not enforced.

Some homes in a town are on private wells or a small system of their own. The name on your water bill tells you which is yours.

What handles it

Each of these is certified, on a certifier’s listing, for a result above a line in Lexington Water Dept. (MWRA)’s water.

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Every claim, and more filters, in the full report

Water testing near Lexington

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 Lexington, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • Mass DPH Environmental Chemistry Lab

    Jamaica Plain, MA · about 11 miles

    Certified for lead and copper, metals

    (617) 983-6654

  • White Lodge Laboratory

    Westwood, MA · about 16 miles

    Certified for bacteria

    (781) 710-6498

  • G and L Labs Inc.

    Quincy, MA · about 17 miles

    Certified for bacteria

    (617) 328-3663

All 81 certified labs for Massachusetts

ZIP codes in Lexington

Which ZIP codes are in Lexington: 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 Lexington

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

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