4 named for PFAS itself on the list.
Per the state list or a state web page. Call to confirm.
Located outside Missouri but on its list.
USGS estimate for Missouri.
How many labs test for PFAS in Missouri
4 labs on Missouri's official drinking-water lab list are certified to test for PFAS. All 4 are named for PFAS on the list. The Missouri list does not say which labs take samples from homeowners, so call a lab before you send one. 4 are located outside Missouri.
The list is published by the Missouri Department of Natural Resources (chemical labs) + Department of Health and Senior Services (microbiological labs). List version on file: Live export fetched 2026-11-15 (no list date printed in the file). Fetched 2026-11-15 (UTC).
Missouri labs certified for PFAS
| Lab | Location | PFAS certification | Public samples | Cert. expiry |
|---|---|---|---|---|
| ALS Group USA-Holland | Holland, MI | Named on the official list | Public samples: ask the lab | 11/30/2027 |
| Pace Analytical Services LLC-Florida | Ormond Beach, FL | Named on the official list | Public samples: ask the lab | 6/30/2028 |
| Pace Analytical Services LLC-Illinois | Peoria, IL | Named on the official list | Public samples: ask the lab | 6/30/2028 |
| American Water Central Laboratory | Belleville, IL | Named on the official list | Public samples: ask the lab Looks like a utility or municipal lab, judging by the name (our label, not the state list) | 10/31/2027 |
How the Missouri list marks public samples (whole list). Not stated in the list.
Before you send a sample, call the lab to confirm it is currently certified for the exact test and method, that it accepts samples from homeowners, and how to collect and ship them. Status can change between list updates.
Why test for PFAS in Missouri
EPA's 4.0 ng/L limits for PFOA and PFOS cover public water, not private wells, and its May 2026 proposals to roll back four other PFAS limits are not final. Read our PFAS explainer.
About 821,343 people in Missouri used private wells in 2015, by the USGS estimate of people on domestic self-supplied water. [1] Federal limits are written for public water systems, not private wells, so testing is up to the owner.
For tests that depend on your home (farms nearby, old plumbing, a new baby), use the which-tests checklist. When results arrive, check your numbers against EPA's limits. State guidance, county data and every lab: Missouri.
Other tests in Missouri
Missouri DNR - Certified Chemical Laboratories (spreadsheet of all laboratories).
Official source