GL
Great Lakes Water Quality Laboratory, Inc.
6461 Sunset Drive, Lake Ann, MI
Water testing in Michigan
43 certified labs for drinking and well water testing in Michigan, from the official list, plus mail-in labs certified in Michigan, typical costs and what to test for.
18 cities & counties43 certified labs
Source: Michigan EGLE lists of certified drinking water laboratories (chemistry and microbiology), list dated Mar 11, 2026. Find a Water Test is independent and not affiliated with Michigan's Department of Environment, Great Lakes, and Energy (EGLE). Certification covers specific tests, so confirm the lab is certified for the ones you need: Verify a certification.
43Certified labs in Michigan on our list
23Counties with a listed lab
11Labs certified for bacteria (coliform)
1Mail-in labs certified in Michigan
Major cities
Counties in Michigan A–Z
Smaller counties in Michigan
Counties with only a few listings so far, grouped by county.
Benzie County 1
Gladwin County 1
AW
Assurance Water Laboratory
103 North Bowery Avenue, Gladwin, MI
Houghton County 1
WU
Western Upper Peninsula Health Department
540 Depot Street, Hancock, MI
Public water system lab. Many don't accept private well samples, so call first.
Iosco County 1
EL
Enviro Lab Services, Inc
4150 Arrow Street, Oscoda, MI
Iron County 1
WW
White Water Associates, Inc.
429 River Lane, Amasa, MI
Luce County 1
LR
LMAS Regional Laboratory
14150 Hamilton Lake Road, Newberry, MI
Public water system lab. Many don't accept private well samples, so call first.
Muskegon County 1
TA
Trace Analytical Laboratories, Inc.
2241 Black Creek Road, Muskegon, MI
Otsego County 1
NM
Northwest Michigan Community Health Agency
95 Livingston Boulevard, Gaylord, MI
Public water system lab. Many don't accept private well samples, so call first.
Roscommon County 1
RA
Raven Analytical Laboratory
104 1/2 First Street, Roscommon, MI
Saginaw County 1
SC
Saginaw County Health Department Laboratory
1600 N. Michigan, Saginaw, MI
Public water system lab. Many don't accept private well samples, so call first.
St. Joseph County 1
EL
Enviroappraisal Labs
Centreville, MI
Mail-in labs that ship to Michigan
How mail-in testing worksNT
National Testing Laboratories (WaterCheck)
Ships nationwide
Single tests from $75; well and city packages $165 to $440
Certified in Michigan
TS
Tap Score by SimpleLab
Ships nationwide
About $189 to $1,125 (city and well kits, Oct 2026)
Testing service: sends your sample to a partner lab.
How to get your water tested in Michigan
- Pick a certified lab. In Michigan, drinking water labs are certified by the Michigan Department of Environment, Great Lakes, and Energy.
- Choose your tests. For a private well, the EPA recommends testing every year for total coliform bacteria, nitrates, total dissolved solids and pH. Add local concerns like arsenic, lead or PFAS.
- Get the lab's bottles. Use the lab's sterile bottles and follow its instructions exactly. Bacteria samples usually have to reach the lab within about a day.
- Check the results against EPA limits with our results checker, and retest after any repair or treatment.
Lab list from Michigan's Department of Environment, Great Lakes, and Energy (EGLE), current as of 2026-03-11.
Certifying agencies: State programs that certify labs to conduct drinking water analyses (US EPA).
What water testing costs in Michigan
Prices vary by lab. These are one state lab's published fees, so you have a benchmark when you call around. See the full cost guide.
Bad result? Get help from water treatment pros near Michigan
Tell us what your test found and we'll connect you with up to three local water treatment companies.
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.
Free, no obligation. We don't sell your details to anyone else.
Just need a lab? Every certified lab is listed above with directions.
Common questions
Where can I get my water tested in Michigan?
There are 43 certified labs in Michigan on our list, drawn from the state's official list. 1 mail-in lab is also certified in Michigan. Labs are certified by the Michigan Department of Environment, Great Lakes, and Energy, so confirm the lab is certified for the specific tests you need.
How much does well water testing cost in Michigan?
A basic bacteria test costs about $35 at a state public health lab, and bacteria plus nitrate about $70. Full homeowner packages run a few hundred dollars. Call two or three labs for current prices.
How often should I test my well in Michigan?
The EPA recommends testing a private well every year for total coliform bacteria, nitrates, total dissolved solids and pH, and right away after flooding, well repairs, or a change in taste, color or smell.
Is a mail-in kit as good as a local lab?
If the lab analyzing it is certified in your state for those tests, yes. For a home sale, check whether your lender requires the sample to be collected by the lab or an inspector.