Connecticut — 1st District
119th Congress · 91 ZIP codes · Avg score 80/100 · Grade B · Updated 2026-07-19
Data: EPA SDWIS / Census 119th Congress Last verified: 2026-07-19
ZipCheckup tracks water safety for 91 ZIP codes in Connecticut's 1st District: the district earns a grade B (80/100). 357 EPA violations on record, 80 health-based.
Top Contaminants
ZIP Codes in This District
91 ZIP codes tracked in Connecticut's 1st District. Showing top 50 by safety score.
| # | ZIP Code | City | Safety Score | Grade | Violations |
|---|---|---|---|---|---|
| 1 | 06129 | Wethersfield | 98 | A | 2 |
| 2 | 06131 | Newington | 97 | A | 2 |
| 3 | 06041 | Manchester | 95 | A | 5 |
| 4 | 06034 | Farmington | 94 | A | 3 (1 health) |
| 5 | 06102 | Hartford | 93 | A | 1 |
| 6 | 06104 | Hartford | 93 | A | 1 |
| 7 | 06123 | Hartford | 93 | A | 1 |
| 8 | 06126 | Hartford | 93 | A | 1 |
| 9 | 06132 | Hartford | 93 | A | 1 |
| 10 | 06134 | Hartford | 93 | A | 1 |
| 11 | 06140 | Hartford | 93 | A | 1 |
| 12 | 06141 | Hartford | 93 | A | 1 |
| 13 | 06142 | Hartford | 93 | A | 1 |
| 14 | 06143 | Hartford | 93 | A | 1 |
| 15 | 06144 | Hartford | 93 | A | 1 |
| 16 | 06145 | Hartford | 93 | A | 1 |
| 17 | 06146 | Hartford | 93 | A | 1 |
| 18 | 06147 | Hartford | 93 | A | 1 |
| 19 | 06150 | Hartford | 93 | A | 1 |
| 20 | 06151 | Hartford | 93 | A | 1 |
| 21 | 06152 | Hartford | 93 | A | 1 |
| 22 | 06153 | Hartford | 93 | A | 1 |
| 23 | 06154 | Hartford | 93 | A | 1 |
| 24 | 06155 | Hartford | 93 | A | 1 |
| 25 | 06156 | Hartford | 93 | A | 1 |
| 26 | 06160 | Hartford | 93 | A | 1 |
| 27 | 06161 | Hartford | 93 | A | 1 |
| 28 | 06167 | Hartford | 93 | A | 1 |
| 29 | 06176 | Hartford | 93 | A | 1 |
| 30 | 06183 | Hartford | 93 | A | 1 |
| 31 | 06199 | Hartford | 93 | A | 1 |
| 32 | 06030 | Farmington | 91 | A | 3 (1 health) |
| 33 | 06045 | Manchester | 91 | A | 5 |
| 34 | 06101 | Hartford | 91 | A | 1 |
| 35 | 06103 | Hartford | 91 | A | 1 |
| 36 | 06105 | Hartford | 91 | A | 1 |
| 37 | 06112 | Hartford | 91 | A | 1 |
| 38 | 06115 | Hartford | 91 | A | 1 |
| 39 | 06120 | Hartford | 91 | A | 1 |
| 40 | 06180 | Hartford | 91 | A | 1 |
| 41 | 06016 | Broad Brook | 87 | A | 9 (2 health) |
| 42 | 06040 | Manchester | 86 | A | 5 |
| 43 | 06042 | Manchester | 86 | A | 5 |
| 44 | 06106 | Hartford | 86 | A | 1 |
| 45 | 06114 | Hartford | 86 | A | 1 |
| 46 | 06109 | Wethersfield | 84 | B | 2 |
| 47 | 06011 | Bristol | 83 | B | 7 |
| 48 | 06026 | East Granby | 83 | B | 25 (3 health) |
| 49 | 06098 | Winsted | 83 | B | 0 |
| 50 | 06111 | Newington | 83 | B | 2 |
Overview
Connecticut's 1st District encompasses 91 ZIP codes tracked by ZipCheckup. The district's average Home Safety Score is B (80/100).
357 EPA violations have been recorded across this district's water systems. 80 are health-based violations. About 73% of tracked ZIP codes have at least one violation.
Top Contaminants
The most frequently cited water quality issues in this district:
- Surface Water Treatment Rule - 84 violations
- Stage 2 DBP Rule - 65 violations
- Consumer Confidence Report Rule - 41 violations
- Stage 1 DBP Rule - 37 violations
- Fecal Coliform - 36 violations
Housing Context
Homes in this district were built on average around 1960 (~66 years old). Older homes may have lead pipes or solder - consider a water filter if your home predates 1986.
Data Sources
- Water quality violations: EPA Safe Drinking Water Information System (SDWIS)
- Congressional district boundaries: U.S. Census Bureau, 119th Congress
- Housing age: U.S. Census Bureau American Community Survey
Updated daily. Data covers 91 ZIP codes in Connecticut's 1st District.