Data source: EPA SDWIS Last verified: 2026-06-04

Water quality varies significantly across New Haven, CT. We analyzed 26 ZIP codes to help you compare neighborhoods by water safety, lead risk, and EPA compliance.

City Overview: Grade C (67/100)

Grade	Neighborhoods	%
A	0	0%
B	8	31%
C	18	69%
D	0	0%
F	0	0%

Neighborhood Rankings

Every ZIP code in New Haven ranked by Home Safety Score:

Rank	ZIP Code	Score	Grade	Violations	Lead Risk
1	06501	70	B	0	0.0010 mg/L
2	06503	70	B	0	0.0010 mg/L
3	06505	70	B	0	0.0010 mg/L
4	06506	70	B	0	0.0010 mg/L
5	06507	70	B	0	0.0010 mg/L
6	06510	70	B	0	0.0010 mg/L
7	06531	70	B	0	0.0010 mg/L
8	06540	70	B	0	0.0010 mg/L
9	06502	66	C	0	0.0010 mg/L
10	06504	66	C	0	0.0010 mg/L
11	06508	66	C	0	0.0010 mg/L
12	06509	66	C	0	0.0010 mg/L
13	06520	66	C	0	0.0010 mg/L
14	06521	66	C	0	0.0010 mg/L
15	06530	66	C	0	0.0010 mg/L
16	06532	66	C	0	0.0010 mg/L
17	06533	66	C	0	0.0010 mg/L
18	06534	66	C	0	0.0010 mg/L
19	06535	66	C	0	0.0010 mg/L
20	06536	66	C	0	0.0010 mg/L
21	06537	66	C	0	0.0010 mg/L
22	06538	66	C	0	0.0010 mg/L
23	06511	65	C	0	0.0010 mg/L
24	06519	65	C	0	0.0010 mg/L
25	06513	60	C	0	0.0010 mg/L
26	06515	60	C	0	0.0010 mg/L

How Neighborhoods Compare

Each ZIP code compared to county and state averages:

• 26 neighborhoods score better than county average
• 0 neighborhoods score worse than county average

Frequently Asked Questions

What is the safest neighborhood in New Haven?

ZIP code 06501 has the highest safety score in New Haven at 70/100 (grade B). Check the full report for details.

Is New Haven water safe to drink?

New Haven has an average water safety score of 67/100 (C). Water quality varies by neighborhood — no ZIP codes currently exceed EPA lead limits. Always check your specific ZIP code.

Related Pages

• New Haven, CT city page
• Connecticut state rankings
• All Connecticut alerts

Data Sources

• EPA SDWIS
• U.S. Census Bureau

Updated daily.