⚠ Order Your Test Early
Well water tests ordered the week before closing are a common source of closing delays. Order the test at or before the home inspection—not at the end of the contingency period. If results come back with an issue, you need time to remediate and re-test before the 90-day window expires.
Quick Reference: Validity Windows by Loan Type
| Loan Type | Validity Window | Measured From | Source |
|---|---|---|---|
| VA Loan | 90 days | Date of certification / lab report | VA Lender’s Handbook (Circular 26-16-19) |
| FHA Loan | 90–180 days (varies) | Date of test / local health authority determination | HUD Handbook 4000.1; local HUD field office rules |
| USDA Loan | 180 days | Date of sampling | USDA Rural Development HB-1-3555 |
| Conventional (Fannie/Freddie) | No standard window | Lender sets policy; typically 90–180 days | Individual lender guidelines |
| State-mandated testing (e.g., NJ, WI) | 1 year (NJ); 90 days (WI) | Varies by state law | State statute |
VA Loans: 90-Day Window, No Exceptions
The VA is the strictest of the three federal programs on test validity. Results submitted to a VA lender must have been collected no more than 90 days before the closing date. There is no VA-level exception to this rule.
Practically, this means:
- If you test on March 1 and close on June 15, your results are expired and you will need a new test before closing
- If a failed test forces remediation and re-testing, the re-test date resets the 90-day clock
- Some VA appraisers note the collection date on the appraisal, which the underwriter then tracks against the closing date
The 90-day window is measured from the date the sample was collected, not the date the lab issued the report. Most labs process private well samples within 3–7 business days, so your effective window to closing is typically 83–87 days from collection.
Practical advice for VA buyers: If your estimated closing date is more than 60 days from the test date, discuss with your lender whether it makes sense to wait and test closer to the expected closing. If the deal drags, a test conducted too early becomes a sunk cost and you’ll need a fresh one.
FHA Loans: 90–180 Days, Varies by Local Authority
FHA does not publish a single, uniform validity window the way VA does. HUD Handbook 4000.1 defers to the local health authority’s standards for private well testing. In practice, this creates significant variation:
- Most FHA lenders default to a 90-day validity window to be conservative
- Some local HUD field offices explicitly accept results up to 180 days
- A few states (notably New Jersey, where PWTA results are valid for one year) have longer acceptance windows through the state program
The safest approach with FHA is to treat the window as 90 days unless your specific lender or local HUD field office tells you otherwise in writing.
USDA Loans: The Most Lenient at 180 Days
USDA Rural Development’s Single Family Housing Guaranteed Loan Program (HB-1-3555, Chapter 12) accepts water quality test results that are no more than 180 days old at the time of closing. This is the longest validity window among the three federal programs.
USDA also allows the lender to use results from a previous closing if the property was recently tested—as long as those results fall within the 180-day window. If a property sold 4 months ago and a passing test was conducted for that transaction, the same results can be used for a new transaction if the closing happens within 180 days of the original test.
What Happens If Your Test Results Expire Before Closing?
If your closing is delayed and your well water test expires, you simply need to conduct a new test. This is a manageable issue but can cause timeline complications:
- Identify the expiration
Your lender or underwriter will flag expired results during the final loan review. Check your test date early and track it against your projected closing date.
- Order a new test promptly
Contact the same certified lab or use our lab finder to order a new sample kit. Most labs can ship a collection kit within 1–2 days and return results within 3–7 business days.
- Notify your lender
Tell your loan officer the new test has been ordered and provide the expected results date. Most lenders will hold the loan in underwriting for 5–10 days to accommodate a fresh test.
- Submit results immediately upon receipt
Don’t wait for your closing date—get the results to your lender the day they arrive so underwriting can process them.
How Long Test Results Are Valid for Different Purposes
Outside of real estate closings, well water test result validity is less regulated but still practically important:
| Purpose | Typical Accepted Age | Notes |
|---|---|---|
| FHA/VA/USDA closing | 90–180 days (see above) | Must be from state-certified lab |
| State health department filing | Varies by state; typically 1 year | New Jersey PWTA: 1 year |
| Personal peace of mind / annual monitoring | Annually recommended | Test more frequently after flooding or nearby land-use change |
| Insurance company request | Typically 1–2 years | Some insurers require testing for coverage on well-served properties |
| Refinancing with FHA/VA | Same as purchase: 90–180 days | If the property is being refinanced and an appraisal is required |
✅ Best Practice Timeline
Order the well water test at the same time as the home inspection—typically 7–14 days after going under contract. Results arrive within 1–2 weeks, leaving you time to address any issues before closing. For VA loans, aim to close within 75–80 days of the test date to build in a buffer. For USDA, you have comfortable room with the 180-day window.