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103,508 service line records across 22 town(s), copied from the utility's published inventory.
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Matched to public water system CT0640011 (PWSID listed in the utility's source data).
UCMR 5 is a one-time EPA monitoring program, not a compliance determination. The values shown are the highest single sample result at any of the system's sampling points; one result above 4.0 ppt does not mean the system violates the PFAS rule, which is judged on running annual averages under separate compliance monitoring. Results describe the public water system, not an individual home.
In April 2024 EPA set enforceable limits (MCLs) of 4.0 ppt each for PFOA and PFOS, plus 10 ppt for PFHxS, PFNA and HFPO-DA (GenX) and a Hazard Index for mixtures, with compliance based on a running annual average at each sampling point and due in 2029 (EPA ↗). In May 2026 EPA proposed letting systems request two more years for PFOA/PFOS (to April 2031) and rescinding the PFHxS, PFNA, GenX and Hazard Index limits (EPA: extension proposal ↗ · EPA: rescission proposal ↗). These are proposals, not final rules, as of the date this page was built.
Source: EPA UCMR 5 final occurrence data (EPA page last updated 2026-08-28; samples collected January 2023 – December 2025) ↗. PFAS results for all 10,313 tested systems nationwide →
| Town | Records | Lead | Galvanized requiring replacement | Lead status unknown | Non-lead |
|---|---|---|---|---|---|
| Berlin, CT | 3 | 0 | 0 | 0 | 3 |
| Bloomfield, CT | 6,508 | 0 | 0 | 743 | 5,765 |
| Burlington, CT | 1 | 0 | 0 | 0 | 1 |
| Collinsville, CT | 1 | 0 | 0 | 0 | 1 |
| Cromwell, CT | 7 | 0 | 0 | 1 | 6 |
| East Granby, CT | 379 | 0 | 0 | 1 | 378 |
| East Hartford, CT | 13,983 | 0 | 1 | 2,472 | 11,510 |
| Farmington, CT | 711 | 0 | 0 | 15 | 696 |
| Glastonbury, CT | 6,355 | 0 | 1 | 498 | 5,856 |
| Hartford, CT | 18,450 | 0 | 1 | 2,854 | 15,595 |
| Manchester, CT | 19 | 0 | 0 | 5 | 14 |
| New Hartford, CT | 2 | 0 | 0 | 0 | 2 |
| Newington, CT | 9,683 | 0 | 0 | 882 | 8,801 |
| Portland, CT | 1 | 0 | 0 | 0 | 1 |
| Rocky Hill, CT | 5,015 | 0 | 0 | 399 | 4,616 |
| South Glastonbury, CT | 72 | 0 | 0 | 2 | 70 |
| South Windsor, CT | 2,198 | 0 | 0 | 76 | 2,122 |
| Unknown town, CT | 18 | 0 | 0 | 2 | 16 |
| West Hartford, CT | 20,155 | 0 | 0 | 2,583 | 17,572 |
| Wethersfield, CT | 9,665 | 0 | 0 | 587 | 9,078 |
| Windsor, CT | 10,280 | 0 | 0 | 859 | 9,421 |
| Windsor Locks, CT | 2 | 0 | 0 | 0 | 2 |