MC
Marathon County Public Health Lab
1000 Lakeview Dr, Wausau, WI
Water testing labs in Marathon County, WI
2 state-accredited water testing labs in Marathon County, WI.
2 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.
2 certified labs near Marathon County, WI
UW
U.S. Water, LLC
6905 Venture Cir, Schofield, WI
Mail-in labs that ship to Marathon County, 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 Marathon County, WI
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What happens next
- We match your ZIP to water treatment companies nearby.
- They contact you directly to talk through your results.
- Compare options and pick one, or none. No fee, no obligation.
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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 Marathon County, WI?
The state-accredited labs above serve Marathon County, WI. Many offer sample bottles you collect at home.
What should I test for near Marathon County, WI?
Start with total coliform bacteria and nitrates, then ask your county health department about local concerns.