# Connecticut — HFPO-DA — 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 Connecticut, state–chemical pair is Connecticut — HFPO-DA; pfas compound is HFPO-DA; concentration limit (ppt) is 19; regulation type is action level; stricter than federal mcl is no, recorded from its source on 2026-08-14.

- **State–chemical pair:** Connecticut — HFPO-DA
- **State:** Connecticut
- **PFAS compound:** HFPO-DA _(verified: appears in the quote below)_
- **Concentration limit (ppt):** 19 _(verified: appears in the quote below)_
- **Regulation type:** action level
- **Stricter than federal MCL:** no _(our reading, not quoted from the source)_

## What the source says

> Concentration level 19 ppt Chemical(s) and type of regulation Gen X or HFPO-DA (Notification)

## 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/).