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Is Fontana-on-Geneva Lake, WI tap water safe?

Fontana Water Utility serves Fontana-on-Geneva Lake, 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

Fontana Water Utility serves Fontana-on-Geneva Lake. In EPA’s and Wisconsin’s records it has 2 results above the health goal, and 1 health-based violation since 2016.

The worst: Lead at 3.1 ppb, above the health goal. Health goals are stricter than legal limits and are not enforced.

The water from Fontana Water Utility is very hard, typically 370 mg/L (21.6 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 Fontana Water Utility’s water.

Disclosure: TapBuff earns a commission if you buy through some links on this page. It does not change which standard or filter we name. As an Amazon Associate, TapBuff earns from qualifying purchases. How TapBuff makes money

Every claim, and more filters, in the full report

Water testing near Fontana-on-Geneva Lake

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 Fontana-on-Geneva Lake, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • Lake Geneva Utility Commission

    Lake Geneva, WI · about 5 miles

    Certified for bacteria

    (262) 248-2311 ext. 406

  • Walworth Co. Health & Human Services

    Elkhorn, WI · about 12 miles

    Certified for bacteria, nitrate

    (262) 741-3200

  • S & R Krizan Pump Service Incorporated

    Wind Lake, WI · about 25 miles

    Certified for bacteria

    (262) 895-6454

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 Fontana-on-Geneva Lake

Which ZIP codes are in Fontana-on-Geneva Lake: 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 Fontana-on-Geneva Lake

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

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