Downingtown, Pennsylvania Water Quality Report
Water quality data for 2 water systems serving 12,568 people.
Water Source
Detected Contaminants
| Contaminant | Detected Level | EPA Limit (MCL) | Health Guideline | % of Limit | Status |
|---|---|---|---|---|---|
| PFBS | 0.004 | No federal limit | 2000.0 ug/L(EPA Health Advisory) | 0% | Below guideline |
| PFHxA | 0.003 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFOA | 0.004 | 0.004 ug/L | 0.090 ug/L(EWG) | 105% | Above limit |
| PFPeA | 0.003 | 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 (4)
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Resolved Violations (374)
38
Sep 1, 2025 — Sep 30, 2025
38
Sep 1, 2025 — Sep 30, 2025
27
Jul 1, 2025 — Sep 30, 2025
27
Jul 1, 2025 — Sep 30, 2025
03
Jan 1, 2023 — Dec 31, 2023
+ 369 more resolved violations
Frequently Asked Questions
Is Downingtown tap water safe to drink?
Downingtown'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 Downingtown tap water?
4 contaminants have been detected in Downingtown's water supply across 2 water systems. See the full contaminant table above for details.
How can I improve my water quality in Downingtown?
Install a water filter rated for the specific contaminants found in Downingtown's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Downingtown have any water quality violations?
Yes, Downingtown currently has 4 active violations. See the violations section above for details.