EM
Eurofins Microbiology Laboratories
2345 S 170th St, New Berlin, WI
Water testing labs in Waukesha County, WI
5 state-accredited water testing labs in Waukesha County, WI.
5 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.
5 certified labs near Waukesha County, WI
WC
Waukesha County Department of Parks & Land Use
515 W Moreland Blvd, Waukesha, WI
BW
Brookfield Water Utility
19700 Riverview Dr, Brookfield, WI
Public water system lab. Many don't accept private well samples, so call first.
MF
Menomonee Falls Water Utility
W152n8634 Margaret Rd, Menomonee Falls, WI
Public water system lab. Many don't accept private well samples, so call first.
WW
Waukesha Water Utility
115 Delafield St, Waukesha, WI
Public water system lab. Many don't accept private well samples, so call first.
Mail-in labs that ship to Waukesha 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 Waukesha County, 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 Waukesha County, WI?
The state-accredited labs above serve Waukesha County, WI. Many offer sample bottles you collect at home.
What should I test for near Waukesha County, WI?
Start with total coliform bacteria and nitrates, then ask your county health department about local concerns.