State

Connecticut: drinking water records

EPA lists 476 community water systems serving homes in Connecticut. 62 took part in EPA's national PFAS survey (UCMR 5), and 41 found at least one PFAS above the level laboratories can measure.

In focus476community water systems

Public records. Clearer context.

Data as of EPA UCMR 5 final release, August 2026 (file dated Aug 28, 2026) · EPA SDWIS 2026Q2 (file dated Jul 9, 2026). How we build these pages

ZIP reports published

476

community water systems

191

systems with a health-based violation since 2016

systems that reached the lead action level since 2016

PFAS in EPA’s final survey

41 of the 62 Connecticut systems in EPA’s national PFAS survey found at least one PFAS, and 29 had a PFOA or PFOS yearly average at or above EPA’s limit. See Connecticut’s PFAS results by system and compound.

Counties

Fairfield County 61 systems
Hartford County 47 systems
Litchfield County 76 systems
Middlesex County 50 systems
New Haven County 31 systems
New London County 88 systems
Tolland County 69 systems
Windham County 53 systems

ZIP reports

Beyond the Connecticut overview

Pick a county. Then read the records.

PFASConnecticut PFAS resultsWhich Connecticut systems found PFAS in EPA’s final survey, and which compounds turned up most often.LeadLead in drinking waterHow EPA’s lead records work and what the action level means for your home’s pipes.Your utilityFind your annual water reportConfirm the supplier on your bill, then read its Consumer Confidence Report for local results.

All states and territories

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. Database prepared 2026-09-03.

PFAS in EPA’s final survey

Counties

ZIP reports

Pick a county. Then read the records.

Sources

Every record tellspart of the story.

Every record tells
part of the story.