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Is Defiance, OH tap water safe?

5 utilities serve Defiance, by EPA’s records. Here is what EPA’s and Ohio’s records show for each, against the legal limits and the stricter health goals.

Matched to your utility using EPA records.

The short answer

5 of the 5 utilities serving Defiance have a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and Ohio’s records: Defiance City, Ayersville Water and Sewer District, Christi Water System Inc and 2 more.

Defiance City, which serves the most people here, has 1 result above the legal limit. The worst: Total trihalomethanes (TTHM) at 90.7 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 Defiance’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 Defiance City’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 Defiance

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 Ohio certifies.

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

  • Kleinfelder Water Technologies Laboratory

    McClure, OH · about 23 miles

    Certified for bacteria

    (419) 748-7438

  • Eurofins DW and WW Central - Lima

    Lima, OH · about 41 miles

    Certified for bacteria

    (419) 223-1362

  • Jones & Henry Laboratories

    Northwood, OH · about 50 miles

    Certified for nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts

    (419) 666-0411

All 76 certified labs for Ohio

ZIP codes in Defiance

Which ZIP codes are in Defiance: 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: Ohio EPA, laboratories certified/accepted to perform analyses on public drinking water; distances from the Census 2020 ZIP code tabulation area gazetteer.

Near Defiance

Towns nearby with a page of their own.

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