Your buyer’s lender is going to test your well whether you volunteer anything or not, and whatever that test turns up becomes your problem the moment escrow opens. Selling a home with a well in Washington means answering for a system most homeowners never think twice about until a lender starts asking questions.
This guide walks through exactly what Washington’s Form 17 disclosure statement requires you to answer about your well, what FHA, VA, and USDA lenders demand before your buyer’s loan can fund, and how sellers around Wenatchee, Chelan, and the rest of the Columbia River valley get ahead of it instead of getting blindsided mid-escrow. If you’ve already got a buyer lined up and a well you haven’t looked at in years, call us at (509) 300-5151 and we’ll get a test scheduled before your lender does.
What Changes When You’re Selling a Home With a Well in Washington
On city water, the utility answers for the pipes and the treatment plant. On a private well, you’re the utility. That means when you sell, you’re the one who has to answer, in writing, for the pump, the water quality, the water rights, and the system’s history.
Washington doesn’t require a private well inspection by law before a sale closes. But two things make it feel mandatory anyway. First, Washington’s Seller Disclosure Statement, universally called Form 17, requires you to answer specific questions about your well under RCW 64.06. Second, if your buyer is financing with FHA, VA, or USDA, their lender will require a water test and, in some cases, distance verification from your septic system regardless of what you disclose.
Sellers who skip ahead of both usually end up negotiating from a weaker position, discovering problems the same week they’re supposed to be signing closing documents. Sellers who test and document early usually close on schedule with fewer surprises for everyone at the table.
Form 17: The Water Questions You’re Legally Required to Answer
Form 17 asks you to disclose based on your actual knowledge of the property, not a warranty that everything works perfectly. You aren’t required to hire an inspector before you list. You are required to answer honestly about what you already know, and checking “no” on something you know is false is where sellers get into real legal trouble.
The Water section of Form 17 asks you to state:
- Whether your water source is a private well serving only your property, or a shared well, and if shared, whether there’s a written agreement
- Whether there’s an easement, recorded or not, for accessing or maintaining the well
- Whether there are any known problems or repairs needed
- Whether the well has provided an adequate year-round supply of potable water during your ownership
- Whether there’s a water treatment system, and if so, whether it’s owned or leased
- Whether there’s a water right permit, certificate, or claim tied to the well, and whether any portion of that right has gone unused for five or more consecutive years (most rural properties here run on a permit-exempt well, and the Washington Department of Ecology’s groundwater permit exemption page explains what that status does and doesn’t cover)
- Whether there are any defects in the operation of the water system, including the pipes, tank, or pump
If your property is on a septic system, a separate section asks whether it was permitted, when it was last pumped and inspected, and how many bedrooms it’s approved for. Sellers with homes built before 1978 also answer a separate lead-based paint section, which is a different question from lead in the water itself.
None of this asks you to guess or to hire a lab before you list. It asks you to tell the truth about what you know. Once you sign, you have three business days built into RCW 64.06 for the buyer to rescind based on your answers, and full details you leave off Form 17 can turn into a legal claim after closing, not just an awkward conversation.
What FHA, VA, and USDA Lenders Require Before You Sell a Home With a Well
Even a seller who answers Form 17 perfectly can’t stop a lender from ordering its own water test. Conventional buyers usually skip this unless an appraiser flags something. Government-backed loans almost never skip it.
| Loan Type | Well-to-Septic Distance Rule | Water Test Required | Test Validity |
|---|---|---|---|
| Conventional | No federal minimum; follows local health department code | Usually only if the appraiser flags a concern | N/A |
| FHA | 50 ft from septic tank, 100 ft from drainfield (may drop to 75 ft with local health authority sign-off) | Required whenever the well sits within 100 ft of any septic component | Up to 180 days old at disbursement |
| VA | 50 ft from septic tank, 100 ft from drainfield | Required on every private well; tests at minimum for coliform bacteria, lead, and nitrates/nitrites | Up to 90 days old |
| USDA Rural Development | Generally mirrors FHA distances, per local health authority | Required on every private well, per local and state drinking water standards | Typically 90 days |
A lot of orchard-country properties around Quincy and Moses Lake were built decades before these distance rules existed, and the well sitting 60 or 70 feet from an old drainfield was perfectly legal when it was drilled. That doesn’t make it exempt from today’s lending rules. If your buyer’s FHA or VA appraiser measures a shortfall, the file can stall until you get a local health department variance or your buyer’s loan type changes.
The lender’s water test isn’t optional and isn’t something you can substitute your own results for, even if you tested last year. Our well water testing service can get you a current panel fast, and knowing your numbers before a buyer’s underwriter does means no surprises during their contingency window.
Test Your Well Before You List, Not After You Get an Offer
The sellers who have the smoothest closings are the ones who test before the sign goes in the yard, not after an offer comes in with a 10-day contingency clock already running.
Karen, who sold her home on the edge of Cashmere last spring, had her well tested for $280 before she ever listed. The panel came back with elevated iron and manganese, cosmetic issues that stain fixtures but aren’t a health risk, and nothing that would trip up an FHA buyer’s coliform and lead test. She disclosed the staining honestly on Form 17, offered a $600 credit toward a filtration system, and her buyer’s loan closed without a single well-related delay.
Compare that to a seller who lists first and finds out during the buyer’s contingency period that the well tests positive for coliform, or that the septic-to-well distance doesn’t meet FHA’s rule. Now you’re fixing a problem on the buyer’s clock instead of your own, often with a rush surcharge attached and a nervous buyer watching the calendar.
A full water panel runs $150 to $400 depending on what you’re testing for. That’s a small number next to the cost of a financing delay or a renegotiated price. The Washington Department of Health recommends annual testing for coliform bacteria and nitrates even outside of a sale, so a pre-listing panel is doing double duty. If your well hasn’t been tested in the last year, request a free estimate here and get ahead of it before you’re negotiating from behind.
Red Flags That Can Blow Up a Sale, and How Sellers Get Ahead of Them
Some findings are minor paperwork. Others can cost you the deal, or cost you afterward if you didn’t disclose them.
Positive bacteria tests. Ray, selling a place outside Moses Lake to a VA buyer, got a call from his agent two weeks before closing: the lender’s water test came back total coliform positive. He had the well shock chlorinated for about $150 including the inspection, retested after the wait period, and closed twelve days late but still closed. Total cost was small. The bigger risk was that he didn’t know about it until the lender found it.
Old pumps and pressure tanks. A pump past 12 years old, or a pressure tank showing rust and waterlogging, tends to surface during any thorough inspection. Disclosing it upfront and pricing it into the negotiation, rather than hoping nobody asks, keeps you in control of the number. A full pump replacement runs $1,800 to $4,500, and a pressure tank swap runs $600 to $1,800. Our pump replacement service and what a well pump replacement costs break down what drives those numbers.
Not disclosing what you already know. Linda, near Leavenworth, checked “no” on the Form 17 line asking about known problems or repairs needed, because she figured a pressure switch issue from the year before had been fixed for good. It hadn’t. Her buyer’s pump started short cycling within a month of moving in, traced the history back through a neighbor, and threatened a claim under RCW 64.06 for an omission she knew about at the time she signed. She ended up paying $1,800 to settle and repair the system, more than double what a disclosed $600 pressure tank replacement would have cost her at closing.
The pattern across all three: sellers who get ahead of the problem spend less and keep more control than sellers who wait for someone else to find it. Call us at (509) 300-5151 if you want a straight read on your system before you sign a disclosure statement you’re not sure about.
Buyer’s Well Inspection vs. Seller’s Disclosure: Two Different Jobs
It’s worth being clear about something that trips up a lot of people mid-transaction: a buyer’s well inspection and a seller’s Form 17 disclosure are not the same document, and they don’t serve the same purpose.
A buyer orders a well inspection to find out what’s true about the property right now, independent of what the seller says. We cover that whole process, flow testing, pump and pressure system checks, water quality panels, in our guide to well inspection when buying a house. That inspection exists specifically because Form 17 only requires the seller’s actual knowledge, not a technical evaluation.
As a seller, your job is different: answer honestly about what you know, and don’t let a lender’s required water test be the first time you learn something about your own well. The two processes are supposed to work together. A seller who’s already tested and disclosed clearly gives a buyer’s inspector less to find, and gives everyone at the table one less reason to renegotiate at the last minute.
Frequently Asked Questions
Is Form 17 required if I’m selling a home with a well in Washington?
Yes, for most residential sales of up to four units, including homes on private wells, Washington law under RCW 64.06 requires sellers to complete and deliver Form 17 within five business days of mutual acceptance. It asks about your actual knowledge, not results from a lab test you haven’t ordered. A handful of transactions, like certain foreclosures or new construction, are exempt, but a typical private sale isn’t.
Do I have to test my well before I sell my house in Washington?
State law doesn’t require you to test before listing, but your buyer’s lender almost certainly will if the loan is FHA, VA, or USDA. Testing proactively before you list lets you disclose accurate results on Form 17 and price in any fixes ahead of time, instead of reacting to a lender’s report on the buyer’s contingency clock.
What happens if my septic system is too close to my well for a buyer’s loan?
FHA and VA both generally require at least 50 feet between a well and a septic tank and 100 feet between a well and a drainfield, though local health authorities can sometimes approve a reduced distance. Older rural properties built before these rules existed aren’t automatically exempt from today’s lending standards. If your buyer’s appraiser flags a shortfall, you may need a local health department variance or the buyer may need to switch loan types.
Can I get in legal trouble for not disclosing a well problem when I sell?
Yes. Form 17 disclosures are based on your actual knowledge at the time you sign, and knowingly checking “no” to a question you know is false can expose you to a legal claim from the buyer after closing under RCW 64.06. Disclosing a known issue honestly, even an expensive one, and negotiating around it is almost always cheaper than a dispute discovered after the sale.