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Is Butler, WI tap water safe?

Butler Waterworks serves Butler, by EPA’s records. Here is what EPA’s and Wisconsin’s records show for it, against the legal limits and the stricter health goals.

Matched to your utility using EPA records.

The short answer

Butler Waterworks serves Butler. In EPA’s and Wisconsin’s records it has nothing above a health goal, and no health-based violation since 2016.

That data covers what its report lists, not everything.

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.

Water testing near Butler

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 Wisconsin certifies.

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

  • Eurofins S-F Analytical Laboratories Inc.

    New Berlin, WI · about 9 miles

    Certified for bacteria, nitrate, lead and copper, metals

    (262) 727-6006

  • M M S D Lab Services Central Lab

    Milwaukee, WI · about 10 miles

    Certified for bacteria

    (414) 277-6377

  • Water Diagnostics Laboratories

    Mequon, WI · about 10 miles

    Certified for bacteria, nitrate

    (414) 350-1100

Wisconsin State Laboratory of Hygiene: Well water test kits ordered by phone and shipped free; you pay to mail the sample back, and the lab bills you after testing. Tests run from bacteria alone to a homeowner package covering bacteria, nitrate, fluoride, metals, hardness, volatile organic compounds and atrazine. Bacteria is $35, nitrate $35, lead $38, and the homeowner package $450, as of July 1, 2026. Public Environmental and Water Testing Prices, Wisconsin State Laboratory of Hygiene.

All 156 certified labs for Wisconsin

ZIP codes in Butler

Which ZIP codes are in Butler: 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: Wisconsin DNR and DATCP, certified and approved drinking water laboratories; distances from the Census 2020 ZIP code tabulation area gazetteer.

Near Butler

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

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