Herndon, Virginia Water Quality Report
Water quality data for 4 water systems serving 1,146,340 people.
Water Source
Detected Contaminants
| Contaminant | Detected Level | EPA Limit (MCL) | Health Guideline | % of Limit | Status |
|---|---|---|---|---|---|
| 6:2 FTS | 0.010 | No federal limit | — | — | No federal limit |
| PFBA | 0.018 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFBS | 0.008 | No federal limit | 2000.0 ug/L(EPA Health Advisory) | 0% | Below guideline |
| PFHpA | 0.006 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFHxA | 0.017 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFOA | 0.007 | 0.004 ug/L | 0.090 ug/L(EWG) | 185% | Above limit |
| PFOS | 0.006 | 0.004 ug/L | 0.300 ug/L(EWG) | 143% | Above limit |
| PFPeA | 0.021 | 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 (5)
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Resolved Violations (43)
4G
Oct 17, 2024
2E
Oct 17, 2024
52
Oct 1, 2015
52
Oct 1, 2015
22
Sep 1, 2015 — Sep 30, 2015
+ 38 more resolved violations
Frequently Asked Questions
Is Herndon tap water safe to drink?
Herndon'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 Herndon tap water?
8 contaminants have been detected in Herndon's water supply across 4 water systems. See the full contaminant table above for details.
How can I improve my water quality in Herndon?
Install a water filter rated for the specific contaminants found in Herndon's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Herndon have any water quality violations?
Yes, Herndon currently has 5 active violations. See the violations section above for details.