PFAS and Home Inspections: What Every Inspector Needs to Know

You may have heard the term "forever chemicals" in the news, but PFAS, per- and polyfluoroalkyl substances, are rapidly becoming something home inspectors can no longer afford to ignore. Once considered a niche environmental concern, PFAS contamination is now showing up in roughly 52% of American water supplies, affecting an estimated 172 million people. The question isn't whether this issue will reach your clients. It already has.

A recent ASHI webinar featuring Cassie Hallberg, CEO of PureTrace Labs, shed light on what PFAS are, why they matter, and how home inspectors may be uniquely positioned to play a critical role in protecting homeowners, while also growing their business.

What Are PFAS, and Why Should Inspectors Care?

PFAS are a group of more than 10,000 synthetic chemicals that have been widely used since World War II in products like non-stick cookware, firefighting foam, water-resistant clothing, and food packaging. They earn the nickname "forever chemicals" because their molecular structure, a strong carbon-fluorine bond, doesn't break down naturally in the environment or in the human body.

The health risks associated with PFAS exposure are serious. Research links PFAS to several types of cancer (including kidney and testicular cancer), immune system disruption, thyroid dysfunction, fertility problems, elevated cholesterol, and developmental impacts in children. Ninety-nine percent of Americans are estimated to have PFAS detectable in their bloodstream.

Media coverage is accelerating. PFAS-related stories are appearing at a rate of roughly seven per day across the country, and consumer awareness is growing fast. In a survey of 215 homeowners and future buyers, 88% said they would want PFAS testing added to a home inspection if it were available, and 91% said they would follow their home inspector's recommendation on the matter.

The Historical Pattern: From Asbestos to Radon to PFAS

Hallberg walked webinar attendees through a pattern that recurs in environmental health risks. Hazards like lead, asbestos, and radon all followed the same trajectory: scientific identification, commercial real estate impact, then residential real estate impact, and finally widespread adoption of testing at the point of sale, largely driven by home inspectors.

PFAS is following that same arc. It is already disrupting commercial real estate, with significant legal activity and insurance companies stepping back from PFAS-related liability. The residential side is not far behind. Several states, including New Jersey and New Hampshire, have already enacted disclosure requirements or mandatory well water testing for real estate transactions.

For inspectors who remember what happened with radon, the opportunity here is familiar: a public health concern, a growing regulatory environment, and a moment when accessible, affordable testing can transform a hazard into a standard inspection add-on.

The Testing Challenge — and What's Coming

The main barrier to widespread PFAS testing in home inspections has been cost and complexity. Traditional EPA-approved testing methods run $400 to $800 per sample, require large water specimens shipped on ice, and can take up to three weeks to return results, timelines that simply don't fit real estate transactions.

New testing technologies are emerging to address this. PureTrace Labs, for example, is developing a paper spray mass spectrometry method capable of detecting PFAS at one part per trillion from a small, five-milliliter water sample, with a projected lab turnaround of one to three days and a consumer price point in the $99 range per kit. This kind of accessible testing is what Hallberg believes could make PFAS screening a standard part of the home inspection process.

Inspectors interested in following this space can look for upcoming pilot programs, as multiple companies are actively working to bring faster, more affordable PFAS testing to market.

What Inspectors Can Tell Clients About Mitigation

While a definitive fix for environmental PFAS contamination remains elusive, there are practical options homeowners can act on right now. Carbon pitcher filters and refrigerator filters offer a low-cost starting point, though they require regular replacement to remain effective. Reverse osmosis systems, either under-sink or countertop, provide strong PFAS reduction at a moderate price ($300 to $800 for the system, plus annual maintenance). Whole-home point-of-entry filtration systems represent the gold standard, though they carry a higher price tag of $2,000 to $10,000.

One important note for inspectors advising clients: carbon filters that aren't changed regularly can actually increase PFAS concentrations in water as the saturated filter releases what it has absorbed. This is a nuance worth communicating clearly.

What This Means for Your Inspection Business

If PFAS testing reaches a consumer-accessible price point, something the market is moving toward, it represents a meaningful revenue opportunity for inspectors. At a test price of $99 and a client charge of $199 to $300, the margin is solid. More importantly, it positions inspectors as proactive health and safety advisors in a landscape where consumer anxiety about water quality is already high and growing.

Home inspectors helped establish radon as a standard inspection concern. The same opportunity exists with PFAS. Staying informed now and being ready to offer testing as the technology matures are exactly the kind of forward-looking practices that distinguish exceptional inspectors.

For ASHI members looking to stay current on developments in PFAS testing and regulatory changes, keep an eye on ASHI Edge for continuing education resources on environmental hazards and emerging inspection services.

Watch the Full Webinar on ASHI Edge

Want to go deeper on PFAS, the science, the regulatory landscape, and what it could mean for your inspection business? Watch the full recording of "PFAS: What Home Inspectors Need to Know" on ASHI Edge.

ASHI Edge is your hub for on-demand continuing education, webinar recordings, and professional development resources designed specifically for home inspectors. Log in today and explore what's available to help you stay ahead.