BL
Badger Laboratories, Inc.
501 W Bell St, Neenah, WI
Water testing labs in Winnebago County, WI
7 state-accredited water testing labs in Winnebago County, WI.
7 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.
7 certified labs near Winnebago County, WI
UW
University of Wisconsin - Oshkosh
2041 Michigan St Sturgeon Bay, Oshkosh, WI
UW
University of Wisconsin - Oshkosh
1028 S 9th St Manitowoc, Oshkosh, WI
AW
Appleton Water Treatment Facility
2281 Manitowoc Rd, Menasha, WI
Public water system lab. Many don't accept private well samples, so call first.
ME
Menasha Electric & Water Utility
57 Manitowoc St, Menasha, WI
Public water system lab. Many don't accept private well samples, so call first.
NW
Neenah Water Utility
234 S Park Ave, Neenah, WI
Public water system lab. Many don't accept private well samples, so call first.
OW
Oshkosh Water Dept
425 Lake Shore Dr, Oshkosh, WI
Public water system lab. Many don't accept private well samples, so call first.
Mail-in labs that ship to Winnebago 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 Winnebago County, WI
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Well water guides
Common questions
Where can I test well water near Winnebago County, WI?
The state-accredited labs above serve Winnebago County, WI. Many offer sample bottles you collect at home.
What should I test for near Winnebago County, WI?
Start with total coliform bacteria and nitrates, then ask your county health department about local concerns.