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Is Danbury, CT tap water safe?

15 utilities serve Danbury, 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

4 of the 15 utilities serving Danbury have a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and CDC’s records: Danbury Water Department, Aquarion - Pearce Manor, Cornell Hills Assoc, Inc and 1 more.

Danbury Water Department, 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: PFOA at 5.4 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 Danbury’s ZIP codes, from EPA’s estimates.

5 more utilities in Danbury

By EPA’s estimate, each serves fewer people in Danbury than those above.

What handles it

Each of these is certified, on a certifier’s listing, for a result above a line in Danbury Water Department’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 Danbury

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

  • ALS Environmental - Newtown

    Newtown, CT · about 8 miles

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

    (203) 270-9973

  • South Norwalk Electric & Water Laboratory

    Wilton, CT · about 13 miles

    Certified for bacteria, nitrate, minerals and other inorganics

    (203) 866-3366 ext. 259

  • Aquarion Water Trap Falls Water Quality Lab

    Shelton, CT · about 18 miles

    Certified for bacteria

    (203) 445-7362

All 86 certified labs for Connecticut

ZIP codes in Danbury

Which ZIP codes are in Danbury: 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 Danbury

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

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