Water testing in Wisconsin

Door County WellTAP Free Well Testing

Free

• Full panel

Contact Door County Public Health at 920-746-2234 or [email protected] to request a water sample be taken by DCPH staff for analysis at the Wisconsin State Lab of Hygiene.

The well serves someone who is pregnant, a child 12 or under, or a person with weakened immune system; the well serves your primary residence; a financial or other burden prevents you from testing on your own.

• Door County Public Health Division, 421 Nebraska Street, Sturgeon Bay · 920-746-2234

Checked October 1, 2026. Report a change

Door County Well Water Test Kits

$25

• Bacteria
• E. coli
• Nitrate
• Fluoride
• Lead
• +2 more

Pick up a water testing kit at the Door County Government Center Public Health Division or Soil and Water Conservation Department, then send or drop off the sample at one of the listed partner labs and pay the lab directly.

• Door County Government Center, Public Health Division, 421 Nebraska Street, Sturgeon Bay · 920-746-2234

Checked October 1, 2026. Report a change

Brown County Well Water Testing

$30

• Bacteria
• E. coli
• Nitrate

Drop off a well water sample at the Brown County Environmental Health Laboratory at Duck Creek Center during the posted drop off hours for bacteria and nitrate testing.

• Duck Creek Center, Environmental Health Unit and Environmental Health Laboratory, 2198 Glendale Ave., Green Bay · 920-448-6400

Checked October 1, 2026. Report a change

Wisconsin State Laboratory of Hygiene Homeowner Well Water Testing

$35

• Bacteria
• E. coli
• Nitrate
• Arsenic
• Lead
• +8 more

Call the lab or stop by its Madison customer service desk to order a sampling kit, then mail the collected sample back for analysis.

• Wisconsin State Laboratory of Hygiene, 2601 Agriculture Drive, Madison · (800) 442-4618

Checked October 1, 2026. Report a change

Waukesha County Private Well Water Quality and Laboratory Services

$35

• Bacteria
• Nitrate
• Fluoride
• Hardness
• Chloride
• +2 more

Order a test kit online, order by phone with a credit card, or pick up a kit in person at the Waukesha County Environmental Health office.

• Waukesha County Environmental Health, 515 W Moreland Blvd, Suite AC260, Waukesha · (262) 896-8300

Checked October 1, 2026. Report a change

Kewaunee County Public Health Well Water Testing

Call for price

• Bacteria
• Nitrate
• Total dissolved solids
• pH

Pick up a water testing kit at the Kewaunee County Public Health Department during regular business hours and mail the water sample directly to the Wisconsin State Lab of Hygiene for analysis; pregnant women and new mothers can request a free test.

Open to private well owners in Kewaunee County; pregnant women and new mothers qualify for a free well water test.

• Kewaunee County Public Health Department, 810 Lincoln St., Kewaunee · 920-388-7160

Checked October 1, 2026. Report a change