Find a Water Test Add or claim a listing

Water testing labs near Green Bay, WI

5 state-accredited water testing labs serving Green Bay, WI and the surrounding area.

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.

Looking wider?All of Brown County

5 certified labs near Green Bay, WI

GB

Green Bay Water Utility Lab

6183 Finger Rd, Green Bay, WI

State-accredited labDrinking waterBacteria testingPublic or utility lab

Public water system lab. Many don't accept private well samples, so call first.

(920) 845-2031Directions
Claim, correct or remove

Mail-in labs that ship to Green Bay, WI

How mail-in testing works

Bad result? Get help from water treatment pros near Green Bay, WI

Tell us what your test found and we'll connect you with up to three local water treatment companies.

What happens next

  1. We match your ZIP to water treatment companies nearby.
  2. They contact you directly to talk through your results.
  3. Compare options and pick one, or none. No fee, no obligation.

Free, no obligation. We don't sell your details to anyone else.

Just need a lab? Every certified lab is listed above with directions.

Run one of these businesses? Claim your listing, add a missing one or get featured in Green Bay, WI.

Well water guides

What to test forBad resultsBuying a home

Common questions

Where can I test well water near Green Bay, WI?

The state-accredited labs above serve Green Bay, WI. Many offer sample bottles you collect at home.

What should I test for near Green Bay, WI?

Start with total coliform bacteria and nitrates, then ask your county health department about local concerns.