Derry, Pennsylvania Water Quality Report
Water quality data for 1 water system serving 6,500 people.
Water Source
Detected Contaminants
| Contaminant | Detected Level | EPA Limit (MCL) | Health Guideline | % of Limit | Status |
|---|---|---|---|---|---|
| PFBS | 0.015 | No federal limit | 2000.0 ug/L(EPA Health Advisory) | 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 (6)
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Resolved Violations (324)
3A
Apr 1, 2025 — Apr 30, 2025
3A
Apr 1, 2025 — Apr 30, 2025
27
Oct 1, 2024 — Dec 31, 2024
27
Oct 1, 2024 — Dec 31, 2024
27
Oct 1, 2024 — Dec 31, 2024
+ 319 more resolved violations
Frequently Asked Questions
Is Derry tap water safe to drink?
Derry's water meets all EPA maximum contaminant levels. However, 1 contaminants were detected at various levels. Some residents may prefer additional filtration for peace of mind.
What contaminants are in Derry tap water?
1 contaminants have been detected in Derry's water supply across 1 water system. 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 6 active violations. See the violations section above for details.