Neighborhood Report Grade C

Norwalk, CT Neighborhood Water Quality - Grade C

Name: Water Quality Data for Norwalk, Connecticut
Creator: ZipCheckup
License: https://creativecommons.org/licenses/by/4.0/

11 ZIP codes · 22 EPA violations

Data source: EPA SDWIS Last verified: 2026-07-19

ZipCheckup compares 11 ZIP codes across Norwalk, CT. The area averages a grade C (61/100); 11 ZIP codes carry recorded EPA violations.

Water quality varies significantly across Norwalk, CT. We analyzed 11 ZIP codes to help you compare neighborhoods by water safety, lead risk, and EPA compliance.

City Overview: Grade C (61/100)

Grade	Neighborhoods	%
A	0	0%
B	0	0%
C	8	73%
D	3	27%
F	0	0%

Neighborhood Rankings

Every ZIP code in Norwalk ranked by Home Safety Score:

Rank	ZIP Code	Score	Grade	Violations	Lead Risk
1	06852	69	C	2	0.0030 mg/L
2	06857	65	C	2	0.0030 mg/L
3	06858	65	C	2	0.0030 mg/L
4	06859	65	C	2	0.0030 mg/L
5	06860	65	C	2	0.0030 mg/L
6	06856	64	C	2	0.0030 mg/L
7	06850	59	C	2	0.0030 mg/L
8	06851	59	C	2	0.0030 mg/L
9	06853	54	D	2	0.0030 mg/L
10	06854	54	D	2	0.0030 mg/L
11	06855	54	D	2	0.0030 mg/L

How Neighborhoods Compare

Each ZIP code compared to county and state averages:

8 neighborhoods score better than county average
3 neighborhoods score worse than county average

EPA Violations

22 total violations across Norwalk
11 health-based violations
11 of 11 ZIP codes have violations
0 ZIP codes exceed EPA lead action level

Top Contaminants

Contaminant	Violations	ZIPs
Stage 1 DBP Rule	11	11
Contaminant 0700	11	11

Frequently Asked Questions

What is the safest neighborhood in Norwalk?

ZIP code 06852 has the highest safety score in Norwalk at 69/100 (grade C). Check the full report for details.

Is Norwalk water safe to drink?

Norwalk has an average water safety score of 61/100 (C). Water quality varies by neighborhood — no ZIP codes currently exceed EPA lead limits. Always check your specific ZIP code.

Data Sources

EPA SDWIS
U.S. Census Bureau

Updated daily.

How to cite this page

APA ZipCheckup. (2026). Norwalk, CT Neighborhood Water Quality - Grade C. https://zipcheckup.com/neighborhoods/ct/norwalk/

BibTeX

@misc{zipcheckup-neighborhoods-ct-norwalk,
  author = {{ZipCheckup}},
  title  = {{Norwalk, CT Neighborhood Water Quality - Grade C}},
  year   = {2026},
  url    = {https://zipcheckup.com/neighborhoods/ct/norwalk/}
}

Data as of July 2026.