WO
Washington Ozaukee Public Health Department
121 W Main St, Port Washington, WI
Water testing labs near Port Washington, WI
3 state-accredited water testing labs serving Port Washington, WI and the surrounding area.
3 certified labsUpdated October 2026Source: state lab accreditation records
Source: Wisconsin DNR list of labs certified for coliform bacteria testing, list dated Oct 28, 2026. Find a Water Test is independent and not affiliated with the Wisconsin Department of Natural Resources. Certification covers specific tests, so confirm the lab is certified for the ones you need: Verify a certification.
3 certified labs near Port Washington, WI
WO
Washington Ozaukee Public Health Department
333 E Washington St West Bend, Port Washington, WI
PW
Port Washington Water Dept
408 N Lake St, Port Washington, WI
Public water system lab. Many don't accept private well samples, so call first.
Mail-in labs that ship to Port Washington, WI
How mail-in testing worksNT
National Testing Laboratories (WaterCheck)
Ships nationwide
Single tests from $75; well and city packages $165 to $440
Certified in Wisconsin
TS
Tap Score by SimpleLab
Ships nationwide
Single-contaminant kits from about $145; full well and city panels about $300 to $870
Testing service: sends your sample to a partner lab.
Bad result? Get help from water treatment pros near Port Washington, WI
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Just need a lab? Every certified lab is listed above with directions.
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Well water guides
Common questions
Where can I test well water near Port Washington, WI?
The state-accredited labs above serve Port Washington, WI. Many offer sample bottles you collect at home.
What should I test for near Port Washington, WI?
Start with total coliform bacteria and nitrates, then ask your county health department about local concerns.