Buying a Home on a Well in Josephine County? Ask These Questions Before You Write the Offer
When you buy a house with a well in Southern Oregon, Oregon law requires the seller to test the well for arsenic, nitrate, and total coliform bacteria once they accept your offer, and to send those results to you and to the Oregon Health Authority within 90 days. That testing cannot be waived. Beyond the required test, pull the well’s construction report from the Oregon Water Resources Department to see its depth, flow rate, and water level, and get any shared-well arrangement in writing before you close.
A buyer once asked me, standing in the driveway of a place off Lower River Road, how you tell whether a well is any good.
Fair question. You can’t see it. You can’t kick it like a tire. The pump house is a small box in the corner of the yard and the water comes out of the tap looking exactly like water everywhere else. For a lot of people moving here from a city, the well is the single most unfamiliar thing about buying rural property in Josephine County — and it’s the thing they ask about last, usually somewhere around day 20 of escrow.
It should be one of the first. Not because wells are a problem. Thousands of households in this county run on them year-round without drama. But a well is a piece of infrastructure you’re buying, same as a roof or a septic system, and it comes with a paper trail most buyers never think to ask for.
Here’s what I walk clients through.
Does Oregon require a water test when you buy a house with a well?
Yes — and this is the part most buyers don’t realize is automatic. Under Oregon law, if the property you’re buying has a well that supplies groundwater for domestic use, the seller must have that well tested for arsenic, nitrate, and total coliform bacteria once they accept your offer. The results go to you and to the Oregon Health Authority within 90 days of the seller receiving them.
Three things worth knowing about that requirement:
- It can’t be waived. Not by agreement, not by a motivated seller, not by a buyer in a hurry. It’s a statutory obligation.
- Results stay valid for one year. If a property came on and off the market, the seller may already have a qualifying test in hand. Ask.
- It covers wells reached by easement, too — not just wells sitting on the parcel you’re buying. If the home’s water comes from a well on the neighbor’s land, the requirement still applies.
The benchmarks the lab measures against: arsenic at or below 0.010 mg/L (10 parts per billion), nitrate at or below 10 mg/L, and total coliform bacteria absent in a 100 mL sample.
Should I test for anything beyond the three required contaminants?
Often, yes — and this is where I tell buyers to talk to a certified lab rather than to me. The state’s three-test requirement is a floor, not a full picture. Depending on the property, a lab may suggest looking at lead, hardness, iron, manganese, or other constituents. Josephine County Public Health’s environmental health division recommends testing private wells at least once a year in general, and more often for shallow wells or surface-influenced sources, which are more vulnerable to contamination.
On arsenic specifically: it occurs naturally in Southern Oregon groundwater, and it’s not exotic here. The Oregon Department of Environmental Quality’s statewide groundwater monitoring program sampled 107 private wells across the mid-Rogue basin — Grants Pass, Medford, Central Point, Shady Cove, Ashland — in two rounds during 2015. A portion of those wells came back above the arsenic standard.
Arsenic isn’t something you taste or smell, and it isn’t an emergency — it’s a long-horizon health concern, and it’s treatable. But you want to know before you own it, not after.
How do I find out how deep the well is and how much water it produces?
Pull the well report. Oregon has required them since 1955, and the Oregon Water Resources Department keeps the records in a public, searchable database — you can look up a well by township, range, and section, by the date it was completed, or by the original owner’s last name.
What you get is genuinely useful: the depth of the well, the casing size, the geologic formations the driller hit on the way down, the static water level, and the flow rate in gallons per minute at the time of drilling.
That last number deserves a caveat. The flow rate on a well report is a snapshot from the day the well was drilled, which might have been forty years ago. It is not a guarantee of what the well produces today. If production matters to your plans — irrigation, livestock, a large household — a current flow test by a licensed well contractor is the real answer, and it’s worth the money.
I’ll pull the well report for clients as a matter of course. It takes a few minutes and occasionally it changes the whole conversation.
What if the well is shared with a neighbor?
Then you want the agreement in writing, recorded, and reviewed before you close — and if there isn’t one, treat that as an open item rather than a detail.
A shared well works fine when everyone understands who pays for what. It goes sideways when the pump fails in August and two households discover they never agreed on how repairs get split, who has access to the wellhead, or what happens if one party wants to sell. A recorded shared-well agreement should address maintenance and repair costs, access rights, and what obligations run with the land to the next owner. Groundwater from a domestic well is a different question from surface water — for irrigation and appropriative rights, see Oregon water rights and buying rural property.
If your financing is a government-backed loan, there may be additional requirements around shared water systems. Ask your lender early — that’s a question for them, not for me.
What should you do before writing an offer on a home with a well?
If you’re writing an offer on a property with a well, do four things:
None of this is exotic. It’s just a different checklist than the one you’d use in town, and it’s a checklist a lot of buyers don’t know exists until someone hands it to them. Our buyer’s guide covers the rest of the process, start to close.
Buying rural property in Josephine or Jackson County?
If you’re looking at rural property in Josephine or Jackson County and you’re not sure what you’re looking at, call me. I’ll pull the well report and walk you through what it says — no pitch, no pressure, and no charge for the conversation. Sometimes the answer is “this well is in great shape, go make your offer,” and that’s a perfectly good outcome too.
Surface water, appropriative rights, and what actually transfers with the land.
Frequently asked questions
Does Oregon require a well water test when a house sells?
Who pays for the well test when a home sells in Oregon?
Can a buyer and seller agree to skip the well test?
How long are Oregon well test results good for?
Where can I look up a well log in Oregon?
Is arsenic in well water common in Josephine County?
Sources
- ORS 448.271 — Transfer of property that includes well; testing
- OAR 333-061-0325 — Domestic well tests
- Oregon Health Authority — Well testing and regulations
- Oregon Real Estate Forms — Seller’s responsibilities for well testing
- Oregon Water Resources Department — About well reports
- Josephine County Public Health — Water FAQ
- Oregon DEQ — Statewide groundwater monitoring, mid-Rogue basin
This post is general information, current as of September 2026, and not legal, health, or engineering advice. Rules and conditions change. Verify anything specific to a property with the appropriate agency, a certified laboratory, a licensed well contractor, and your own broker or attorney.
