State
Connecticut: drinking water records
EPA lists 505 community water systems serving homes in Connecticut. 63 took part in EPA's national PFAS survey (UCMR 5), and 42 found at least one PFAS above the level laboratories can measure.
In focus505community water systems
Public records. Clearer context.
0
ZIP reports published
505
community water systems
185
systems with a health-based violation since 2016
50
systems that reached the lead action level since 2016
Counties
- Fairfield County 63 systems
- Hartford County 48 systems
- Litchfield County 74 systems
- Middlesex County 50 systems
- New Haven County 32 systems
- New London County 83 systems
- Tolland County 67 systems
- Windham County 49 systems
ZIP reports
Sources
EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Page generated 2026-09-03.