CONGRESSIONAL DISTRICT CT

Connecticut — 1st District

119th Congress · 91 ZIP codes · Avg score 76/100 · Grade B · Updated 2026-06-03

Data: EPA SDWIS / Census 119th Congress Last verified: 2026-06-03

B
District Grade
76
Avg Safety Score
91
ZIP Codes
815
Total Violations
150
Health Violations
47
Water Systems
Wethersfield
Best ZIP: 06129 (98/100)
Newington
Lowest ZIP: 06111 (46/100)

Top Contaminants

Surface Water Treatment Rule (108) Consumer Confidence Report Rule (73) Fecal Coliform (72) Barium (68) Stage 2 DBP Rule (64)

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 3
2 06034 Farmington 94 A 3 (1 health)
3 06030 Farmington 91 A 3 (1 health)
4 06102 Hartford 91 A 2
5 06104 Hartford 91 A 2
6 06123 Hartford 91 A 2
7 06126 Hartford 91 A 2
8 06132 Hartford 91 A 2
9 06134 Hartford 91 A 2
10 06140 Hartford 91 A 2
11 06141 Hartford 91 A 2
12 06142 Hartford 91 A 2
13 06143 Hartford 91 A 2
14 06144 Hartford 91 A 2
15 06145 Hartford 91 A 2
16 06146 Hartford 91 A 2
17 06147 Hartford 91 A 2
18 06150 Hartford 91 A 2
19 06151 Hartford 91 A 2
20 06152 Hartford 91 A 2
21 06153 Hartford 91 A 2
22 06154 Hartford 91 A 2
23 06155 Hartford 91 A 2
24 06156 Hartford 91 A 2
25 06160 Hartford 91 A 2
26 06161 Hartford 91 A 2
27 06167 Hartford 91 A 2
28 06176 Hartford 91 A 2
29 06183 Hartford 91 A 2
30 06199 Hartford 91 A 2
31 06101 Hartford 89 A 2
32 06103 Hartford 89 A 2
33 06105 Hartford 89 A 2
34 06112 Hartford 89 A 2
35 06115 Hartford 89 A 2
36 06120 Hartford 89 A 2
37 06180 Hartford 89 A 2
38 06016 Broad Brook 87 A 9 (2 health)
39 06106 Hartford 84 B 2
40 06109 Wethersfield 84 B 3
41 06114 Hartford 84 B 2
42 06026 East Granby 83 B 25 (3 health)
43 06098 Winsted 83 B 0
44 06088 East Windsor 82 B 9 (2 health)
45 06011 Bristol 81 B 10
46 06037 Berlin 81 B 6
47 06035 Granby 79 B 6
48 06074 South Windsor 78 B 14 (1 health)
49 06063 Barkhamsted 77 B 3
50 06057 New Hartford 74 B 7 (1 health)

Overview

Connecticut's 1st District serving an estimated 16,555,891 residents encompasses 91 ZIP codes tracked by ZipCheckup. The district's average Home Safety Score is B (76/100).

815 EPA violations have been recorded across this district's water systems. 150 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 — 108 violations
  • Consumer Confidence Report Rule — 73 violations
  • Fecal Coliform — 72 violations
  • Barium — 68 violations
  • Stage 2 DBP Rule — 64 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

Updated daily. Data covers 91 ZIP codes in Connecticut's 1st District.

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