REGIONAL WATER AUTHORITY
High Risk2 PFAS compound(s) exceed EPA Maximum Contaminant Levels
This utility has until 2029 to install treatment under the EPA's April 2024 PFAS rule. In the meantime, a point-of-use filter certified NSF/ANSI 58 for PFOA/PFOS provides reliable interim protection.
4
PFAS Detected
2
Above EPA Limits
47
ZIPs Served
Surface
Water Source
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOS Perfluorooctane sulfonic acid | 10.70ppt | 268% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFOA Perfluorooctanoic acid | 7.10ppt | 178% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFBS Perfluorobutane sulfonic acid | 3.50ppt | No federal limit | — | Unregulated |
PFPeA Perfluoropentanoic acid | 3.10ppt | No federal limit | — | Unregulated |
ZIP Codes Served by This Utility
06401 06405 06408 06411 06418 06460 06461 06467 06471 06472 06473 06477 06483 06501 06502 06503 06504 06505 06506 06507 06508 06509 06510 06511 06512 06513 06514 06515 06516 06517 06518 06519 06520 06521 06524 06525 06530 06531 06532 06533 06534 06535 06536 06537 06538 06540 06716
Click any ZIP to see the full result page for that area.
About this data
Source
EPA UCMR 5 — January 2026 release
Sampling period
January 2023 – December 2025
Water system ID (PWSID)
CT0930011
Detection threshold (MRL)
~1.5–2 ppt — "Not detected" means below this floor