Illustrative scenario: a former training pad appears on a map
A buyer finds a historic fire-training pad on public records several parcels from a farmhouse with a private well. An old report mentions firefighting foam, but it is unclear whether the site was investigated. This is an illustrative scenario. Do not treat the map location or distance as proof that the well is affected; ask the state environmental and health agencies whether the area is under investigation and whether their groundwater data support a well-specific sampling plan.
Some aqueous film-forming foams used in firefighting training contained PFAS. A former training location may therefore be a reason to review records and consult the relevant agencies, but source history, groundwater flow, geology, well depth, and actual sampling matter. A buyer should neither dismiss the question because the parcel is outside a marked boundary nor conclude contamination from proximity alone. The investigation should produce documented answers, not a guess based on a single web map.
Build a site and well record file
Search state cleanup and drinking-water databases, environmental agency files, local fire department or airport records where relevant, historical aerial photographs, land-use records, and prior environmental reports. Ask whether the former training area has a defined area of interest, what chemicals were used if known, where samples were taken, which wells were included, and whether the agency has posted validated results. A site report may use a screening level for investigation; that value is not automatically a final cleanup standard or a private-well determination.
Request the property's well log, construction date, depth, casing and screened interval, pump setting if recorded, treatment equipment, and prior water tests. Locate nearby private wells from agency files without publishing neighbors' personal data. Ask the seller for laboratory certificates and chain-of-custody records, not merely a summary saying the water was tested. If records are missing, write down which office was contacted, search terms, parcel identifiers, and the date; an incomplete archive is a remaining uncertainty, not evidence that the site is clean.
- Environmental site history and former foam use
- Agency investigation status and mapped area of interest
- Groundwater direction and well construction records
- Raw and treated private-well laboratory results
- Sampling dates, analytes, methods, and reporting limits
Ask agencies to define a representative sampling plan
Contact the state environmental or health agency before taking a sample. EPA's private-well PFAS guidance directs owners to consult state and local programs and describes when EPA may sample wells near certain federal cleanup sites. The responsible state may have different programs, methods, advisories, or laboratory requirements. Ask whether the parcel is within a current sampling area, which PFAS analytes matter, where the sample should be taken, which certified laboratory to use, and whether both raw and treated water are needed.
Follow the laboratory's bottle, flushing, preservation, shipping, and chain-of-custody instructions exactly. PFAS sampling can be sensitive to certain materials and contamination from products or handling; do not improvise containers or use a sample kit without confirming its suitability. Record the faucet, treatment status, collection time, lab method, analyte list, reporting limits, and any quality-control sample. A single sample taken at an unapproved point may not answer whether the well source or household tap meets the relevant guidance.
Interpret results with current agency advice
Read each analyte's concentration, units, reporting limit, method, and quality flags. A result below the laboratory's reporting limit is not necessarily zero. Compare it only with current guidance that applies to the location and use, and confirm whether that benchmark is a health advisory, screening value, enforceable public-water standard, or another type of threshold. Rules and guidance can change; use the state health or environmental office's current material on the sampling date rather than a chart copied from an older report.
Ask the agency whether it believes the former training site is a plausible source for this parcel's result, whether additional sampling is needed, and how frequently to retest. EPA cautions that detection in a well does not by itself establish that a particular site caused it. Consider other potential sources and hydrogeologic pathways. If the result raises a health concern, contact the health department or clinician for risk communication and interim-use advice. Do not diagnose health effects from a lab number or make a public accusation about a neighboring owner.
Use the purchase process to resolve—not conceal—uncertainty
Ask the seller for permission to sample before closing and allow enough time for the laboratory's turnaround and agency interpretation. Identify who selects the lab, receives results, pays for repeat testing, and decides whether treatment is acceptable. Have the purchase agreement and disclosure obligations reviewed by local counsel. If the investigation is ongoing, use a written contingency tied to specific records, a defined laboratory panel, and an identified decision-maker; avoid vague language that merely promises to discuss results later.
If treatment is proposed, request independent certification for the exact PFAS reduction claim, design flow, maintenance schedule, replacement costs, waste handling, and post-installation testing. Determine whether a point-of-use device protects only drinking and cooking taps or whether whole-house exposure routes are relevant. Do not assume a treatment quote proves the water is currently safe. If the agency offers public sampling or bottled-water assistance, confirm eligibility directly and obtain terms in writing. The purchase decision may weigh source-water results, agency actions, ongoing obligations, insurance, resale disclosures, and the buyer's tolerance for unresolved uncertainty.
Respect safety and privacy while investigating
Do not enter a former training area, open drums or monitoring wells, remove sample ports, or disturb soil without owner permission and agency direction. Historic fire-fighting areas can include physical, chemical, and access hazards unrelated to PFAS. Contact the responsible authority if there is an abandoned well or damaged monitoring point. Keep sampling containers clean and away from household chemicals, and do not collect a neighbor's water without consent. Agency records should be used through lawful public-record processes while protecting personal information.
Keep copies of the environmental report, agency correspondence, validated lab results, treatment service logs, and any deed notice or land-use restriction. Ask counsel and the environmental professional whether recorded controls affect wells, excavation, gardening, livestock, or future construction. These issues vary by site and state. A consultant can explain the technical evidence, but the regulator determines official site status and the health authority provides public-health advice. If results are concerning, follow those authorities rather than relying on a seller, broker, online map, or treatment salesperson alone.
Frequently asked questions
Does living near a fire-training site prove a private well contains PFAS? No; distance alone is not a water test or source determination. Can I use an old public-water result for the home's well? No; a private well needs representative sampling under the lab's instructions. Does a detected PFAS compound prove the former site caused it? No; source attribution requires agency and technical review.
Should I install a filter before testing? First ask the health authority about immediate precautions and sample design; treated and untreated samples answer different questions. Can a real-estate inspection settle PFAS status? Usually not; obtain a laboratory analysis and agency interpretation. What is a reasonable closing condition? Ask local counsel to define a specific records and sampling contingency, deadlines, access, and remedies before signing or waiving protections.