Allentown, Pennsylvania Water Quality Report
Water quality data for 18 water systems serving 198,541 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 | 0.006 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFHxS | 0.003 | 0.010 ug/L | 0.001 ug/L(EWG) | 31% | Within limit |
| PFOA | 0.004 | 0.004 ug/L | 0.090 ug/L(EWG) | 113% | Above limit |
| PFOS | 0.004 | 0.004 ug/L | 0.300 ug/L(EWG) | 110% | Above limit |
| PFPeA | 0.010 | 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 (20)
52
Oct 1, 2025
52
Oct 1, 2025
52
Oct 1, 2025
4B
Jul 11, 2025
4B
Jul 11, 2025
75
Mar 12, 2025
75
Mar 12, 2025
75
Jan 11, 2018
75
Jan 11, 2018
75
Jan 11, 2018
75
Jan 11, 2018
75
Jan 11, 2018
75
Jan 11, 2018
75
Jan 11, 2018
75
Jan 11, 2018
75
Jan 11, 2018
75
Jan 11, 2018
75
Jan 11, 2018
75
Jan 11, 2018
75
Jan 11, 2016
Resolved Violations (480)
27
Aug 1, 2025 — Aug 31, 2025
36
Aug 1, 2025 — Aug 31, 2025
36
Aug 1, 2025 — Aug 31, 2025
38
Aug 1, 2025 — Aug 31, 2025
38
Aug 1, 2025 — Aug 31, 2025
+ 475 more resolved violations
Frequently Asked Questions
Is Allentown tap water safe to drink?
Allentown's water has 2 contaminants detected above EPA limits. While the water is treated, residents may want to consider additional filtration.
What contaminants are in Allentown tap water?
6 contaminants have been detected in Allentown's water supply across 18 water systems. See the full contaminant table above for details.
How can I improve my water quality in Allentown?
Install a water filter rated for the specific contaminants found in Allentown's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Allentown have any water quality violations?
Yes, Allentown currently has 86 active violations. See the violations section above for details.