Rhode Island — PFOA, PFOS, PFHxS, PFNA, PFHpA, and PFDA combined
For Rhode Island, state–chemical pair is Rhode Island — 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 2026-08-28.
- State–chemical pair
- Rhode Island — PFOA, PFOS, PFHxS, PFNA, PFHpA, and PFDA combined our reading
- State
- Rhode Island our reading
- PFAS compound
- PFOA, PFOS, PFHxS, PFNA, PFHpA, and PFDA combined
- Concentration limit (ppt)
- 20 verified
- Regulation type
- MCL verified
- Stricter than federal MCL
- n/a our reading
- Effective date
- 2024-09-18 our reading
- Regulatory citation
- Rhode Island Public Drinking Water Regulations, as amended 18 September 2024 (RI PFAS in Drinking Water, Groundwater, and Surface Waters Act, RIGL Title 46 ch. 32) our reading
Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.
What the source says
Yes, effective September 18, 2024, an amendment to the existing Public Drinking Water Regulations set a maximum contaminant level (MCL) for per- and polyfluorinated substances (PFAS) in drinking water in Rhode Island. The MCL is 20 parts per trillion (ppt) for a total of six PFAS chemicals.
— health.ri.gov, retrieved 2026-08-28
Source
- health.ri.govhttps://health.ri.gov/water/about/pfas/