Connecticut tap water quality
PFAS results for 63 Connecticut water systems from EPA's latest nationwide testing. Enter your address for your own utility's record and a filter recommendation.
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63systems tested
63%had PFAS detected
35over EPA's 4 ppt limit
Highest PFAS levels in Connecticut
| Water system | Max PFOA (ppt) | Max PFOS (ppt) |
|---|---|---|
| Norwich Public Utilities | 6.7 | 16.2 |
| Manchester Water Department | 13 | 16 |
| Aquarion Water Co of Ct-Newtown System | 15.9 | 12.7 |
| Wallingford Water Department | — | 13.9 |
| Ctwc - Shoreline Region-Guilford System | 6 | 12 |
| Norwalk First Taxing District | 9.5 | 11.2 |
| Aquarion Water Co of Ct-Main System | 10.9 | 6.6 |
| Regional Water Authority | 7.1 | 10.7 |
| Aquarion Water Co of Ct-Ridgefield Sys | 10.6 | 6.1 |
| Ctwc - Crystal System | 9.9 | 6.8 |
All Connecticut water systems
- Aquarion Water Co of Ct-Greenwich System ⚠
- Aquarion Water Co of Ct-Main System ⚠
- Aquarion Water Co of Ct-Mystic
- Aquarion Water Co of Ct-New Canaan Sys ⚠
- Aquarion Water Co of Ct-New Milford ⚠
- Aquarion Water Co of Ct-Noroton System ⚠
- Aquarion Water Co of Ct-Simsbury System ⚠
- Aquarion Water Co of Ct-Stamford ⚠
- Aquarion Water Co of Ct-Valley System ⚠
- Avon Water Co. ⚠
- Bristol Water Department ⚠
- Cromwell Fire District Water Department ⚠
- Ctwc - Naugatuck Region-Central System
- Ctwc - Northern Reg-Western System ⚠
- Ctwc - Shoreline Region-Guilford System ⚠
- Ctwc - Unionville System ⚠
- Danbury Water Department ⚠
- East Lyme Water & Sewer Commission ⚠
- Groton Utilities
- Hazardville Water Company ⚠
- Manchester Water Department ⚠
- Meriden Water Division ⚠
- Metropolitan District Commission
- Middletown Water Department
- New Britain Water Department
- New London Dept. of Public Utilities
- Norwalk First Taxing District ⚠
- Norwich Public Utilities ⚠
- Regional Water Authority ⚠
- South Norwalk Electric & Water
- Southington Water Department ⚠
- Torrington Water Company
- University of Connecticut - Main Campus ⚠
- Valley Water Systems INC. ⚠
- Wallingford Water Department ⚠
- Waterbury Water Department
- Waterford Wpca
- Windham Water Works
- Aquarion Water Co of Ct-Litchfield Sys
- Aquarion Water Co of Ct-Newtown System ⚠
- Aquarion Water Co of Ct-Ridgefield Sys ⚠
- Aquarion Water Co of Ct-Tlwc Woodrich ⚠
- Berlin Water Control Commission
- Bethel Water Dept ⚠
- Colchester Sewer & Water Commission ⚠
- Ctwc - Coventry Hills Div
- Ctwc - Crystal System ⚠
- Ctwc - Naugatuck Reg-Collinsville Sys ⚠
- Ctwc - Naugatuck Reg-Terryville System
- Ctwc - Naugatuck Reg-Thomaston System
- Ctwc - Shoreline Region-Chester System
- Greenwich American Center
- Heritage Water Company ⚠
- Jewett City Water Company
- Kensington Fire District
- Middlebury Hamlet
- New Hartford Water Department
- Portland Water Department
- Putnam Water Pollution Control Authority ⚠
- Sterling Engineering Corp.
- Watertown Fire District
- Watertown Water & Sewer Authority
- Winsted Water Works
Questions
Does Connecticut tap water have PFAS?
In EPA's UCMR 5 testing, 40 of 63 Connecticut water systems (63%) had at least one PFAS compound detected, and 35 had PFOA or PFOS above EPA's 4 ppt limit.
What is the best water filter in Connecticut?
It depends on your utility. Where PFAS is above EPA's limit, reverse osmosis is the most effective option. Where the main concern is lead from home plumbing or chlorine taste, a certified carbon filter is enough. Enter your address to get a match.