Is Sherwood, WI tap water safe?
The short answer
Sherwood Waterworks serves Sherwood. In EPA’s and Wisconsin’s records it has nothing above a health goal, and 1 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 Sherwood
The 3 labs Wisconsin certifies closest to Sherwood, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Outagamie County Public Health Lab
Appleton, WI · about 9 miles
Certified for bacteria
Farm First Dairy Cooperative
Kaukauna, WI · about 9 miles
Certified for bacteria
Clean Water Testing LLC
Appleton, WI · about 11 miles
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics
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 WisconsinZIP codes in Sherwood
Which ZIP codes are in Sherwood: 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 Sherwood
Towns nearby with a page of their own.
What to do next
- Read Sherwood Waterworks’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- Decide if you want a filter at allA filter for taste or chlorine is a preference, not a need. The standards say what each kind can do.NSF/ANSI standards, decoded
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water