Norwich, Connecticut Water Quality Report
Water quality data for 9 water systems serving 36,809 people.
Water Source
Detected Contaminants
| Contaminant | Detected Level | EPA Limit (MCL) | Health Guideline | % of Limit | Status |
|---|---|---|---|---|---|
| PFBS | 0.006 | No federal limit | 2000.0 ug/L(EPA Health Advisory) | 0% | Below guideline |
| PFHxS | 0.013 | 0.010 ug/L | 0.001 ug/L(EWG) | 125% | Above limit |
| PFOA | 0.007 | 0.004 ug/L | 0.090 ug/L(EWG) | 168% | Above limit |
| PFOS | 0.016 | 0.004 ug/L | 0.300 ug/L(EWG) | 405% | Above limit |
| PFPeA | 0.004 | No federal limit | 1000.0 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
4G
Oct 17, 2024
2E
Oct 17, 2024
72
Aug 10, 2015
71
Jul 1, 2015
Resolved Violations (495)
2B
Apr 7, 2025
2B
Apr 7, 2025
2B
Apr 7, 2025
66
Dec 30, 2024
1A
Oct 1, 2023 — Oct 31, 2023
+ 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.