MyCleanWater

Norwich, Connecticut Water Quality Report

Water quality data for 9 water systems serving 36,809 people.

0
Very Poor
out of 100

Water Source

9
Water Systems
37K
People Served
Surface water, Ground water
Water Source

Detected Contaminants

ContaminantDetected LevelEPA Limit (MCL)Health Guideline% of LimitStatus
PFBS0.006 No federal limit2000.0 ug/L(EPA Health Advisory)
0%
Below guideline
PFHxS0.013 0.010 ug/L0.001 ug/L(EWG)
125%
Above limit
PFOA0.007 0.004 ug/L0.090 ug/L(EWG)
168%
Above limit
PFOS0.016 0.004 ug/L0.300 ug/L(EWG)
405%
Above limit
PFPeA0.004 No federal limit1000.0 ug/L(EWG)
0%
Below guideline

Recommended Water Filters

Based on the contaminants detected in your water supply, these filtration systems are recommended:

Reverse Osmosis (RO)

Reverse osmosis systems remove up to 99% of PFAS compounds. Recommended for homes with detected PFAS.

Up to 99% PFAS removal

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Compliance & Violations

Active Violations (5)

75

Sep 19, 2025

minor

4G

Oct 17, 2024

minor

2E

Oct 17, 2024

critical

72

Aug 10, 2015

minor

71

Jul 1, 2015

minor

Resolved Violations (495)

2B

Apr 7, 2025

critical

2B

Apr 7, 2025

critical

2B

Apr 7, 2025

critical

66

Dec 30, 2024

moderate

1A

Oct 1, 2023 — Oct 31, 2023

critical

+ 490 more resolved violations

Frequently Asked Questions

Is Norwich tap water safe to drink?

Norwich's water has 3 contaminants detected above EPA limits. While the water is treated, residents may want to consider additional filtration.

What contaminants are in Norwich tap water?

5 contaminants have been detected in Norwich's water supply across 9 water systems. See the full contaminant table above for details.

How can I improve my water quality in Norwich?

Install a water filter rated for the specific contaminants found in Norwich's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.

Does Norwich have any water quality violations?

Yes, Norwich currently has 57 active violations. See the violations section above for details.