Bryn Mawr, Pennsylvania Water Quality Report
Water quality data for 25 water systems serving 1,057,337 people.
Water Source
Detected Contaminants
| Contaminant | Detected Level | EPA Limit (MCL) | Health Guideline | % of Limit | Status |
|---|---|---|---|---|---|
| lithium | 45.4 | No federal limit | 10.0 ug/L(EPA/USGS HBSL) | 454% | Above guideline |
| PFBA | 0.010 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFBS | 0.013 | No federal limit | 2000.0 ug/L(EPA Health Advisory) | 0% | Below guideline |
| PFHpA | 0.007 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFHxA | 0.018 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFHxS | 0.008 | 0.010 ug/L | 0.001 ug/L(EWG) | 77% | Within limit |
| PFNA | 0.012 | 0.010 ug/L | — | 120% | Above limit |
| PFOA | 0.016 | 0.004 ug/L | 0.090 ug/L(EWG) | 405% | Above limit |
| PFOS | 0.021 | 0.004 ug/L | 0.300 ug/L(EWG) | 537% | Above limit |
| PFPeA | 0.022 | 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
Resolved Violations (500)
27
Sep 1, 2025 — Sep 30, 2025
27
Sep 1, 2025 — Sep 30, 2025
75
Nov 13, 2024
75
Nov 13, 2024
41
Nov 1, 2024 — Nov 30, 2024
+ 495 more resolved violations
Frequently Asked Questions
Is Bryn Mawr tap water safe to drink?
Bryn Mawr'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 Bryn Mawr tap water?
10 contaminants have been detected in Bryn Mawr's water supply across 25 water systems. See the full contaminant table above for details.
How can I improve my water quality in Bryn Mawr?
Install a water filter rated for the specific contaminants found in Bryn Mawr's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Bryn Mawr have any water quality violations?
Yes, Bryn Mawr currently has 67 active violations. See the violations section above for details.