CM
City of Milwaukee Health Dept Laboratory
841 N Broadway, Milwaukee, WI
Water testing labs in Milwaukee County, WI
9 state-accredited water testing labs in Milwaukee County, WI.
9 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.
9 certified labs near Milwaukee County, WI
CW
Cudahy Water Utility
5110 S Lake Dr, Cudahy, WI
Public water system lab. Many don't accept private well samples, so call first.
MM
M M S D Lab Services Central Lab
250 W Seeboth St, Milwaukee, WI
Public water system lab. Many don't accept private well samples, so call first.
MW
Milwaukee Water Works
3929 S 6th Street, Milwaukee, WI
Public water system lab. Many don't accept private well samples, so call first.
MW
Milwaukee Water Works
3000 N Lincoln Memorial Dr, Milwaukee, WI
Public water system lab. Many don't accept private well samples, so call first.
NS
North Shore Water Commission
400 W Bender Rd, Milwaukee, WI
Public water system lab. Many don't accept private well samples, so call first.
OC
Oak Creek Water & Sewer Utility
9325 S 5th Ave, Oak Creek, WI
Public water system lab. Many don't accept private well samples, so call first.
SM
South Milwaukee Water Utility
100 Marshall Ave, South Milwaukee, WI
Public water system lab. Many don't accept private well samples, so call first.
WA
West Allis Water Dept
1725 S 96th St, Milwaukee, WI
Public water system lab. Many don't accept private well samples, so call first.
Mail-in labs that ship to Milwaukee 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.
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Well water guides
Common questions
Where can I test well water near Milwaukee County, WI?
The state-accredited labs above serve Milwaukee County, WI. Many offer sample bottles you collect at home.
What should I test for near Milwaukee County, WI?
Start with total coliform bacteria and nitrates, then ask your county health department about local concerns.