20 Connecticut water districts with results read from their own annual water quality report or EPA testing, largest first.
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- Regional Water Authority418,900 people · 19 results
- Metropolitan District Commission390,887 people · 13 results
- Aquarion-Eastern Fairfield County351,756 people · 20 results
- Aquarion-Stamford119,214 people · 9 results
- Waterbury Water Department107,271 people · 7 results
- Ctwc - Northern Reg-Western System101,313 people · 1 results
- Meriden Water Division58,441 people · 10 results
- Aquarion-Greenwich53,297 people · 16 results
- Southington Water Department43,069 people · 17 results
- Wallingford Water Department37,267 people · 11 results
- Ctwc - Shoreline Region-Guilford System33,975 people · 16 results
- Groton Utilities30,200 people · 11 results
- New London Dept. of Public Utilities27,620 people · 13 results
- Ctwc - Naugatuck Region-Central System22,735 people · 21 results
- Windham Water Works21,214 people · 23 results
- Aquarion-Darien18,737 people · 13 results
- Aquarion-Plainville Regional18,231 people · 15 results
- Waterford Wpca16,578 people · 12 results
- Ctwc - Unionville System14,693 people · 1 results
- Avon Water Co11,590 people · 1 results