Can a standard home water test detect PFAS?

No. Standard multi-panel home test kits do not test for PFAS. PFAS testing requires specialized laboratory analysis — typically EPA Method 533 or 537.1 — at a state-certified or NELAP-accredited laboratory. At-home PFAS test strips currently available are not validated to the same accuracy standard as certified lab methods.

What EPA method is used for PFAS water testing?

EPA Method 537.1 is the primary drinking water method for 40 PFAS compounds. EPA Method 533 expands coverage to shorter-chain PFAS compounds including PFBS, PFPeA, and others not covered by 537.1. Laboratories certified for PFAS testing will specify which method applies to your sample.

How much does PFAS water testing cost?

PFAS water testing typically costs between $150 and $450 per sample depending on the method ordered, the number of PFAS compounds tested, and the laboratory. Some state programs offer subsidized testing for certain users. See our drinking water test cost guide for current ranges.

My public utility has PFAS records — do I still need to test my own tap?

If your home is on a public water system with PFAS violations or health-based exceedances, that utility data applies to treated water at the distribution point — not necessarily at your tap. Lead service lines, building plumbing, and private service lines can affect point-of-use quality. If you have specific concerns about your tap, point-of-use testing is the most direct answer.

What PFAS levels should I be concerned about?

In April 2024, the EPA finalized Maximum Contaminant Levels (MCLs) for six PFAS in public drinking water. PFOA and PFOS have an MCL of 4 parts per trillion (ppt) individually. PFNA, PFHxS, and HFPO-DA (GenX) have an MCL of 10 ppt. A hazard index applies to certain combinations. These MCLs apply to public water utilities — private well users do not have a federal regulatory trigger but can use these as reference points.

What filters remove PFAS from drinking water?

Reverse osmosis (RO) systems are the most studied and widely used for PFAS removal at the point of use. NSF/ANSI Standard 58 certifies RO systems for PFAS reduction. Activated carbon filters (NSF/ANSI 53) reduce some PFAS at varying rates depending on carbon type, contact time, and specific PFAS compounds. Pitcher filters generally have lower effectiveness.

Water Testing Labs

Contaminant Testing Guide

PFAS Water Testing: How To Test Your Water for PFAS

Standard home test kits do not detect PFAS. Testing requires specialized EPA-method analysis at a certified laboratory. This guide explains which methods apply, what results include, and what treatment options are available.

Last updated: 2026-05-13 · Source: EPA, NSF International, ATSDR

Direct Answer

PFAS testing requires a state-certified laboratory using EPA Method 537.1 or EPA Method 533. Standard home test kits do not include PFAS. Testing typically costs $150–$450 per sample. If your public utility has PFAS records in EPA compliance data, that covers the treated water at the distribution system — not your individual tap. Point-of-use testing gives the most direct answer about what is at your faucet.

Who Should Consider PFAS Testing

PFAS are found in many public water systems and some private wells. Testing is most relevant when one or more of the following applies:

You are near a current or former military installation with firefighting training areas

Your address is near an industrial site known to use or manufacture PFAS

Your public utility has PFAS records in EPA UCMR 5 data

You use a private well in an area with documented PFAS contamination

Your state has flagged PFAS as a priority concern in local water quality advisories

You are near a landfill or wastewater facility that received PFAS-containing materials

Check your utility's PFAS compliance records in our PFAS Watchlist before ordering a test.

Lab Methods for PFAS Testing

Not all labs run all methods. Confirm with the laboratory which PFAS compounds are included before submitting a sample.

EPA Method	PFAS Compounds Covered	Notes
EPA Method 537.1	40 PFAS including PFOA, PFOS, PFNA, PFHxS, HFPO-DA (GenX)	Standard for most certified labs; covers regulated compounds
EPA Method 533	25 PFAS including shorter-chain PFBS, PFPeA, PFPeS	Expands coverage beyond 537.1; complementary method for broader screening
EPA Method 533 + 537.1 combined	50+ PFAS total	Broadest available coverage for comprehensive screening

EPA PFAS Maximum Contaminant Levels (2024)

The EPA finalized the first federal drinking water limits for PFAS in April 2024. These MCLs apply to public water utilities — not private wells — but provide the primary reference benchmarks for interpreting test results.

PFOA

4 ppt (parts per trillion) · Individual MCL

PFOS

4 ppt · Individual MCL

PFNA

10 ppt · Individual MCL

PFHxS

10 ppt · Individual MCL

HFPO-DA (GenX)

10 ppt · Individual MCL

PFNA + PFHxS + HFPO-DA + PFBS

Hazard Index ≤ 1 · Combined hazard index

Source: EPA PFAS National Primary Drinking Water Regulation (April 2024). Full PFAS contaminant guide →

How To Get PFAS Water Tested

Check existing utility data first

If you are on a public water system, check the PFAS Watchlist for your utility's EPA UCMR 5 records before ordering a test. Your utility may already have disclosed PFAS data.

Find a certified lab

Use the EPA certified lab directory or your state drinking water program's lab list. Confirm the lab is certified for EPA Method 537.1 or 533. Not all state-certified labs run PFAS panels.

Order and submit a sample

Request a PFAS sampling kit from the lab. Follow collection instructions precisely — PFAS can be introduced through container contamination if protocol is not followed. Submit within the lab's required time window.

PFAS Treatment Options

Treatment effectiveness depends on specific PFAS compounds, system design, and maintenance. Look for NSF/ANSI-certified systems. Certification is not the same as general product claims.

Reverse Osmosis (RO)

The most studied point-of-use method for PFAS reduction. NSF/ANSI Standard 58 covers RO systems for PFAS. RO membranes physically reject most PFAS compounds. Effectiveness varies by compound chain length — longer-chain PFAS are generally more reliably removed.

Activated Carbon (GAC / Block Carbon)

NSF/ANSI Standard 53 covers activated carbon for PFAS reduction. Granular activated carbon (GAC) and solid block carbon filters vary in effectiveness by compound and contact time. Shorter-chain PFAS (PFBS, PFPeA) are harder to remove with carbon alone.

Whole-house treatment

Large-scale GAC systems or ion exchange systems are used by utilities and some households for whole-home PFAS reduction. These are more complex to size, install, and maintain than point-of-use systems.

Next Steps

Check your utility's PFAS records

EPA UCMR 5 data by utility

Find a certified water testing lab

State-certified and NELAP labs

PFAS contaminant guide

Health context, EPA regulation, sources

Reverse osmosis treatment guide

How RO removes PFAS and other contaminants

Well water testing guide

Private well users: what to test and when

Water testing cost guide

What PFAS and other tests cost

PFAS Water Testing FAQs

Data Sources and Methodology

PFAS testing guidance is summarized from EPA PFAS methods documentation, EPA's 2024 National Primary Drinking Water Regulation for PFAS, ATSDR health advisories, and NSF International certification standards. MCL values reflect the April 2024 final rule. Full methodology →

EPA PFAS Drinking Water Rule EPA Method 537.1 EPA Method 533 NSF/ANSI 58 (RO)

Last updated: 2026-05-13