# Massachusetts — PFOA, PFOS, PFHxS, PFNA, PFHpA, and PFDA combined — PFAS drinking water concentration limits by US state — MCLs, notification levels, action levels, and health advisories for PFOA, PFOS, and other per- and polyfluoroalkyl substances

For Massachusetts, state–chemical pair is Massachusetts — PFOA, PFOS, PFHxS, PFNA, PFHpA, and PFDA combined; pfas compound is PFOA, PFOS, PFHxS, PFNA, PFHpA, and PFDA combined; concentration limit (ppt) is 20; regulation type is MCL; stricter than federal mcl is n/a, recorded from its source on 2026-08-14.

- **State–chemical pair:** Massachusetts — PFOA, PFOS, PFHxS, PFNA, PFHpA, and PFDA combined
- **State:** Massachusetts
- **PFAS compound:** PFOA, PFOS, PFHxS, PFNA, PFHpA, and PFDA combined
- **Concentration limit (ppt):** 20 _(verified: appears in the quote below)_
- **Regulation type:** MCL _(verified: appears in the quote below)_
- **Stricter than federal MCL:** n/a _(our reading, not quoted from the source)_
- **Regulatory citation:** 310 CMR 22.00

## What the source says

> Concentration level 20 ppt (stated in the regulation as 20 ng/L) Chemical(s) and type of regulation 6 PFAS substances combined: PFOA, PFOS, PFHxS, PFNA, PFHpA, and PFDA (MCL)

## Source

- https://www.bclplaw.com/en-US/events-insights-news/pfas-drinking-water-standards-state-by-state-regulations.html

Last verified: 2026-08-14. Review by: 2027-02-10.
Part of [PFAS drinking water concentration limits by US state — MCLs, notification levels, action levels, and health advisories for PFOA, PFOS, and other per- and polyfluoroalkyl substances](https://referencesource.org/pfas-drinking-water-limits-by-state/).