Rental well testing in Oregon
A new Oregon law makes landlords test the well water in some rentals, starting January 1, 2027. We collect the samples and get them to an accredited lab on time.
Who the new law covers
Rentals on a well
Rental homes and units that get their drinking water from a domestic well.
In a groundwater management area
The law applies to rentals inside one of Oregon’s groundwater management areas.
Four tests
Arsenic, coliform bacteria, lead and nitrate, tested by an accredited lab.
Is your rental in a groundwater management area?
Oregon has three: the Southern Willamette Valley, the Lower Umatilla Basin and Northern Malheur County. The Southern Willamette Valley area covers parts of Lane, Linn and Benton counties, from the north edge of Eugene and Springfield up the Willamette River, including the areas around Coburg, Junction City, Harrisburg, Monroe and part of Corvallis. That’s within our service area.
Not sure? Send us the address and we’ll check it against the state’s map.
What the law asks of landlords
- Test the rental’s drinking water for arsenic, coliform bacteria, lead and nitrate, using an accredited lab.
- Have the results reported to the Oregon Health Authority and give them to your tenants.
- Retest on the schedule the Oregon Health Authority sets by rule. Those rules are still being written.
- You can have someone else collect the samples for you. That’s us.
Source: Oregon House Bill 3525 (2025), Chapter 574, Oregon Laws 2025. Read the bill. This page is a summary, not legal advice.
How we help
- Send a request with the rental’s address, or call.
- We collect the samples the right way, in the lab’s bottles, and tell the lab the test is for this law.
- We get the samples to an Oregon-accredited (ORELAP) lab within its time limit.
- You get the lab results to share with your tenants.
Our rule is test first, then treat. If a result comes back high, we can talk through water treatment options.
Get ahead of the 2027 start date
Call (503) 877-4403 or send a request.