A92/100
HERNDON, TOWN OF — Water Quality Report 2026
Serving 24,601 people · Virginia
Water Source
Purchased Surface Water
County
—
System ID
VA6059550
Violations
1
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | < 0.001 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2007.
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Frequently Asked Questions About HERNDON, TOWN OF
Is HERNDON, TOWN OF water safe to drink?
HERNDON, TOWN OF water receives a grade of A (92/100), which is considered excellent. Out of 76 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has HERNDON, TOWN OF detected?
76 contaminants were tested in HERNDON, TOWN OF's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does HERNDON, TOWN OF have any EPA violations?
Yes, HERNDON, TOWN OF has 1 EPA violation(s) on record, with the most recent in 2007. Violation types include MCL. 1 are health-based violations.
How many people does HERNDON, TOWN OF serve?
HERNDON, TOWN OF serves approximately 24,601 people, Virginia.
What type of water does HERNDON, TOWN OF provide?
HERNDON, TOWN OF sources its water from purchased surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is VA6059550.
How does HERNDON, TOWN OF compare to other utilities in Virginia?
HERNDON, TOWN OF scores 92/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our Virginia state page for a full comparison of water systems.