Derry, New Hampshire Water Quality Report
Water quality data for 17 water systems serving 18,748 people.
Water Source
Detected Contaminants
| Contaminant | Detected Level | EPA Limit (MCL) | Health Guideline | % of Limit | Status |
|---|---|---|---|---|---|
| PFOA | 0.005 | 0.004 ug/L | 0.090 ug/L(EWG) | 115% | Above limit |
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
Resolved Violations (500)
01
Jul 1, 2023 — Sep 30, 2023
01
Jul 1, 2023 — Sep 30, 2023
01
Jul 1, 2023 — Sep 30, 2023
01
Jul 1, 2023 — Sep 30, 2023
34
Dec 3, 2022
+ 495 more resolved violations
Frequently Asked Questions
Is Derry tap water safe to drink?
Derry's water has 1 contaminant detected above EPA limits. While the water is treated, residents may want to consider additional filtration.
What contaminants are in Derry tap water?
1 contaminants have been detected in Derry's water supply across 17 water systems. See the full contaminant table above for details.
How can I improve my water quality in Derry?
Install a water filter rated for the specific contaminants found in Derry's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Derry have any water quality violations?
Yes, Derry currently has 42 active violations. See the violations section above for details.