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Is Jackson, WI tap water safe?

Jackson Waterworks serves Jackson, 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

Jackson Waterworks serves Jackson. In EPA’s and Wisconsin’s records it has 2 results above the health goal, and 1 health-based violation since 2016.

The worst: Arsenic at 3.9 ppb, above the health goal. Health goals are stricter than legal limits and are not enforced.

The water from Jackson Waterworks is very hard, typically 340 mg/L (19.9 grains per gallon). How Wisconsin’s water compares.

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 Jackson Waterworks’s water.

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Every claim, and more filters, in the full report

Water testing near Jackson

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

  • Water Diagnostics Laboratories

    Mequon, WI · about 9 miles

    Certified for bacteria, nitrate

    (414) 350-1100

  • C & C Pumps LLC

    Hartford, WI · about 10 miles

    Certified for bacteria

    (262) 224-5576

  • Washington Ozaukee Public Health Department

    Port Washington, WI · about 16 miles

    Certified for bacteria

    (262) 284-8170

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 Jackson

Which ZIP codes are in Jackson: 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 Jackson

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

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