3 named for radon in water itself on the list.
Per the state list or a state web page. Call to confirm.
Located outside Oregon but on its list.
USGS estimate for Oregon.
How many labs test for radon in water in Oregon
3 labs on Oregon's official drinking-water lab list are certified to test for radon in water. All 3 are named for radon in water on the list. 3 of them are marked as taking samples from the public. They are listed first. 3 are located outside Oregon.
The list is published by the Oregon Health Authority (OHA) - Oregon State Public Health Laboratory, Oregon Environmental Laboratory Accreditation Program (ORELAP). List version on file: search as fetched 2026-11-15 (live database, no list date). Fetched 2026-11-15 (UTC).
Oregon labs certified for radon in water
Marked as taking public samples (3)
| Lab | Location | Radon in water certification | Public samples | Cert. expiry |
|---|---|---|---|---|
| Environmental Science Corporation (dba Pace Analytical National Center for Testing & Innovation) | Mt. Juliet, TN | Named on the official list | Public samples: yes (per state) | 1/15/2027 |
| Eurofins Pomona | Pomona, CA | Named on the official list | Public samples: yes (per state) | 1/29/2027 |
| Eurofins South Bend | South Bend, IN | Named on the official list | Public samples: yes (per state) | 9/16/2027 |
How the Oregon list marks public samples (whole list). Yes for labs ORELAP marks as accepting public samples (OHA: "these laboratories can accept samples from anyone"); No for drinking-water labs without that mark (mostly utility and federal labs).
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 radon in water in Oregon
Most of the risk from radon in a well comes from breathing the gas the water releases indoors, not from drinking it. Read our radon in water explainer.
EPA's radon zone map puts 0 of Oregon's 36 counties in Zone 1 (highest potential), 21 in Zone 2 and 15 in Zone 3. [1] That map is about radon in indoor air, and EPA says it should not be used to decide whether an individual home needs testing. If radon is found in your air and you have a well, EPA suggests testing the water too.
About 631,538 people in Oregon used private wells in 2015, by the USGS estimate of people on domestic self-supplied water. [2] 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: Oregon.
Other tests in Oregon
ORELAP laboratory search (ODIE): accredited for the Drinking Water matrix.
Official sourceSearch by city or ZIP among labs for radon in water.
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