← All areas
Which Connecticut Areas Have the Most Lead Pipe Risk?
The 50 Connecticut areas with the highest share of confirmed lead service lines, out of 66 areas with enough data for a reliable estimate. Ranked by percentage, not raw count, so a small town with a real lead problem isn't buried under bigger cities with more addresses overall.
| # | Area | Lead | % of addresses |
|---|---|---|---|
| 1 | Bridgeport | 2,898 | 9.1% |
| 2 | Cos Cob | 156 | 8.0% |
| 3 | Greenwich | 913 | 7.9% |
| 4 | Old Greenwich | 195 | 7.8% |
| 5 | Riverside | 77 | 3.0% |
| 6 | Stratford | 454 | 2.4% |
| 7 | Fairfield | 287 | 1.4% |
| 8 | Guilford | 25 | 0.7% |
| 9 | Clinton | 16 | 0.4% |
| 10 | Madison | 16 | 0.4% |
| 11 | Darien | 21 | 0.3% |
| 12 | Vernon | 18 | 0.2% |
| 13 | Westbrook | 4 | 0.2% |
| 14 | Trumbull | 21 | 0.2% |
| 15 | Beacon Falls | 3 | 0.1% |
| 16 | Old Saybrook | 5 | 0.1% |
| 17 | Easton | 1 | 0.1% |
| 18 | Stafford Springs | 1 | 0.1% |
| 19 | Westport | 7 | 0.1% |
| 20 | Thomaston | 1 | 0.1% |
| 21 | Shelton | 6 | 0.0% |
| 22 | Stamford | 6 | 0.0% |
| 23 | Ellington | 1 | 0.0% |
| 24 | Monroe | 1 | 0.0% |
| 25 | Windsor Locks | 1 | 0.0% |
| 26 | Naugatuck | 1 | 0.0% |
| 27 | Avon | 0 | 0.0% |
| 28 | Bloomfield | 0 | 0.0% |
| 29 | Broad Brook | 0 | 0.0% |
| 30 | Brookfield | 0 | 0.0% |
| 31 | Canton | 0 | 0.0% |
| 32 | Danielson | 0 | 0.0% |
| 33 | East Hartford | 0 | 0.0% |
| 34 | East Windsor | 0 | 0.0% |
| 35 | Enfield | 0 | 0.0% |
| 36 | Farmington | 0 | 0.0% |
| 37 | Glastonbury | 0 | 0.0% |
| 38 | Hartford | 0 | 0.0% |
| 39 | Lakeville | 0 | 0.0% |
| 40 | Litchfield | 0 | 0.0% |
| 41 | Middlebury | 0 | 0.0% |
| 42 | Mystic | 0 | 0.0% |
| 43 | New Britain | 0 | 0.0% |
| 44 | New Canaan | 0 | 0.0% |
| 45 | New Milford | 0 | 0.0% |
| 46 | Newington | 0 | 0.0% |
| 47 | Newtown | 0 | 0.0% |
| 48 | Oxford | 0 | 0.0% |
| 49 | Plainfield | 0 | 0.0% |
| 50 | Plainville | 0 | 0.0% |