| Compound | Federal (EPA, 2024 rule) | New York |
|---|---|---|
| PFOA | 4.0 ng/L (ppt) | 10 ng/L |
| PFOS | 4.0 ng/L | 10 ng/L |
| PFHxS, PFNA, HFPO-DA (GenX), Hazard Index | 10 ng/L each; HI = 1 (mixtures of PFHxS, PFNA, HFPO-DA and PFBS) | No NY MCL |
What's changing: on 2026-05-18 EPA proposed keeping the PFOA and PFOS limits (with an option for public systems to take until 2031 to comply) and rescinding the limits for PFHxS, PFNA, HFPO-DA and the Hazard Index. These are proposals, not final rules.
NYSDOH's Private Well PFAS Testing and Mitigation Rebate Pilot offers free PFAS testing in Dutchess, Orange, Putnam, Suffolk, Ulster and Westchester. If a test through the program (or an eligible Suffolk County DHS test dated 2025 or later) shows PFOA or PFOS at 10 ng/L or more, property owners may qualify for rebates of up to $5,000 for whole-house treatment, $1,000 for point-of-use (only where whole-house isn't feasible), or $10,000 to connect to public water. In-home systems need a post-treatment test by a NYS-accredited lab. Funds are limited and applications can pause. When we checked on 2026-10-07 the page said it was accepting testing applications in all six counties: health.ny.gov/environmental/water/drinking/privatewellspilot/
NYSDOH notes private PFAS tests "may range from $300–$600." Use a NYSDOH ELAP-certified lab, and ask your local health department whether PFAS has been found in your area.
Granular activated carbon and reverse osmosis are the common options. Look for an NSF/ANSI 53 or 58 PFOA/PFOS claim on the exact model, and plan for maintenance: the NY pilot notes systems "must be maintained over time to continue to remove PFAS."
Instant download. 14-day no-questions refund. Printable guide (PDF), New York Edition 1.0.