What does a well water test for a home sale check for?

For an FHA or VA loan, the standard private well panel is total coliform bacteria, E. coli, nitrate, nitrite, and lead. Some lenders and some state or local jurisdictions add arsenic, manganese, or turbidity depending on the area. The test has to come from a state-certified or EPA-approved lab, not a home strip kit. Confirm the exact analyte list with your lender or loan officer before you order, because local health-authority rules can expand it.

Who pays for the well water test when selling a house?

It is negotiable and varies by market, but the cost usually lands on the seller because it is a condition of the sale. A basic FHA/VA bacteria, nitrate, and lead panel typically runs $50 to $150. The buyer's lender orders or specifies the test, the result goes into the loan file, and whoever the purchase contract assigns the cost to pays the lab.

What happens if the well water test fails before closing?

A failed test does not automatically kill the deal, but it stalls the closing until the water meets the lender's standard and a clean retest is on file. Bacteria failures are often the fastest to fix: shock chlorinate the well, let it clear, and retest. Nitrate or lead failures usually require treatment equipment and a passing post-treatment sample, which takes longer. Build the possibility of a failed test and a retest into your closing timeline.

Can I use a home test kit for an FHA or VA loan?

No. FHA and VA require the sample to be collected and analyzed under the rules of the state or local health authority with jurisdiction, which means a certified laboratory. Home test strips are useful for a quick pre-listing screen so you are not surprised on test day, but they cannot satisfy the lender. The official result has to come from an approved lab.

Well Water Test for a Home Sale: FHA, VA, and Lender Requirements

Q: How long is a well water test good for a mortgage?

For FHA and VA loans the standard is 90 days from the certification date. After 90 days the result expires and a fresh sample is required. Some lenders or local jurisdictions may allow a slightly longer window, but plan to the 90-day rule and confirm the exact dating requirement with your loan officer. Order the test once you are under contract, not before, so the result stays inside the validity window through the closing date.

Health disclaimer: This page explains the well water testing step in a real estate transaction. It is general information, not legal, lending, or medical advice. Loan rules and local health-authority requirements change and vary by location, so confirm the current standard with your lender, your closing agent, and the state or local agency with jurisdiction over your property.

If you are selling or buying a home on a private well with an FHA or VA loan, the water test is not optional and the timing is tight. Miss the window or fail the test, and closing slips. This page walks the actual workflow: what the lender checks, how long the result stays valid, who pays, and what to do the day a test comes back bad.

This is a different problem from routine homeowner testing. The well water testing guide covers the annual panel you run for your own peace of mind. Here the deadline is the lender’s closing date, and the standard is the loan program’s, not yours.

Why Lenders Test a Private Well at All

A government-backed mortgage is the lender betting that the house is safe to live in and worth the loan. A private well has no public oversight behind it. The EPA’s authority under the Safe Drinking Water Act stops at public systems, so a household well is the owner’s responsibility alone. The private well water EPA guidelines page explains that regulatory gap in full.

To close that gap at the point of sale, FHA and VA require a one-time water quality check on any property served by an individual well. FHA’s rules live in the HUD Single Family Housing Policy Handbook 4000.1, and VA’s live in the Lenders Handbook (VA Pamphlet 26-7). Both defer to the health authority with local jurisdiction for the connection, distance, and water quality standards, then require a passing lab result in the loan file before the loan funds.

The Standard Test Panel

For most FHA and VA transactions, the certified-lab panel covers:

Total coliform bacteria and E. coli, the indicators of fecal or surface contamination
Nitrate and nitrite, measured against the EPA Maximum Contaminant Level of 10 mg/L for nitrate (as nitrogen) and 1 mg/L for nitrite
Lead, against the FHA/VA threshold of 15 ppb (0.015 mg/L). Note that the EPA’s revised Lead and Copper Rule lowers the action level to 10 ppb (0.010 mg/L) effective November 1, 2027

Local health authorities can require more. Arsenic is commonly added in the Northeast and Southwest where it occurs naturally in the bedrock. Manganese, turbidity, or other parameters show up in some jurisdictions. The analyte list is set by whoever has local authority, so the only reliable move is to ask your loan officer for the exact panel before you order. Do not assume the bare federal list is enough where you live.

Two things to get right on every order. The sample has to come from a state-certified or EPA-approved laboratory, not a home strip kit. And the test has to be the home-sale panel, not a leftover result from a routine test you ran two years ago.

The 90-Day Validity Window

This is where deals trip. Lenders treat a water test like a perishable document. The standard FHA/VA well water test is valid for 90 days from the certification date, and after 90 days a fresh sample is required. Some lenders or local jurisdictions may allow a slightly longer window, but plan to the 90-day rule and confirm the exact dating requirement with your loan officer. A test from last spring will not count, no matter how clean it was.

The practical rule: order the test once the home is under contract, not before you list. If you test too early and the closing date drifts, the result can age out of the window and you pay for a second sample. Coordinate the test date with your closing agent so the result lands comfortably inside the validity period with room for a retest if needed.

Who Pays, and How Much

Cost is negotiable and market-dependent, but the water test usually falls to the seller because it is a condition of selling the house. The buyer’s lender specifies or orders the test, the lab sends the result into the loan file, and the purchase contract decides who reimburses the lab.

A basic FHA/VA bacteria, nitrate, and lead panel typically runs $50 to $150. Add arsenic or other local-required analytes and it climbs toward $150 to $300. That is cheap relative to a stalled closing. If you are the seller, a mail-in certified test is an easy way to handle a pre-listing screen so you find a problem on your schedule instead of the lender’s.

What Happens If the Test Fails

A failed water test does not automatically sink the sale. It pauses it. The loan cannot fund until the water meets the lender’s standard and a clean retest is documented in the file. How long that pause lasts depends on what failed.

Bacteria (total coliform or E. coli): often the fastest to clear. The usual fix is to shock chlorinate the well, flush it, and retest after the chlorine clears. Our bacteria in well water page covers what a positive result means and why retesting after treatment is non-negotiable. A persistent positive after chlorination points to a well construction or surface-intrusion problem that needs a professional, and that is a longer road.

Nitrate: nitrate above 10 mg/L is a genuine health issue, not just a paperwork failure. It is most dangerous to infants under six months, where it can cause methemoglobinemia, the blue baby syndrome. Do not try to boil it away, because boiling concentrates nitrate rather than removing it. The fix is treatment, typically reverse osmosis or an anion exchange system, followed by a passing post-treatment sample. See nitrates in well water for the health detail and treatment options. If the home has an infant, this is one to address for safety, not only for the loan.

Lead: because the well itself rarely carries lead, a high result usually points to the plumbing, fittings, or pump components between the aquifer and the tap. Treatment or a plumbing fix, then a passing retest, is the path.

The unifying point: any failed analyte needs treatment or correction plus a fresh clean lab result before the loan moves. Build that into the closing timeline from the start, especially for nitrate or lead, where the remedy is equipment and not a weekend of chlorine.

A Clean Workflow for Sellers

Run a low-cost pre-listing screen, even a home test kit, so a surprise does not surface on the lender’s clock.
Once you are under contract, ask the buyer’s loan officer for the exact required panel and confirm the 90-day dating rule for your loan program.
Order the certified-lab test so the result lands inside that window with margin for a possible retest.
If anything fails, treat or correct it, then get a passing post-treatment sample on file before the closing date.
Keep the clean result and any treatment records. A documented history of clean water shortens the next buyer’s due diligence too.

The test itself is small and inexpensive. The cost of treating it as an afterthought is a closing that slides. Order early enough to absorb a retest, confirm the panel with the lender rather than guessing, and you keep the water test off the list of things that can delay the sale.

Sources:

HUD Single Family Housing Policy Handbook 4000.1 (individual water supply requirements): https://www.hud.gov/program_offices/administration/hudclips/handbooks/hsgh
VA Lenders Handbook, Pamphlet 26-7 (private well requirements): https://www.benefits.va.gov/warms/pam26_7.asp
EPA Private Wells: https://www.epa.gov/privatewells
CDC Private Wells, Testing: https://www.cdc.gov/healthywater/drinking/private/wells/

Health disclaimer: WaterAnswer.com provides general information only, not legal, lending, or medical advice. Mortgage water-quality rules and local health-authority standards vary by location and change over time. Confirm current requirements with your lender, your closing agent, and your state or local health department.