A95/100
WILLISTON WATER DEPT — Water Quality Report 2026
Serving 7,259 people · Vermont
Water Source
Purchased Surface Water
County
—
System ID
VT0005098
Violations
2
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
2
Violations (last 5yr)
2
Unresolved
0
Health-Related
TIER 3Unresolved
Failed Level 2 Assessment under Revised Total Coliform Rule
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
TIER 3Unresolved
Failed Level 2 Assessment under Revised Total Coliform Rule
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
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 WILLISTON WATER DEPT
Is WILLISTON WATER DEPT water safe to drink?
WILLISTON WATER DEPT water receives a grade of A (95/100), which is considered excellent. Out of 31 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has WILLISTON WATER DEPT detected?
31 contaminants were tested in WILLISTON WATER DEPT's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does WILLISTON WATER DEPT have any EPA violations?
Yes, WILLISTON WATER DEPT has 2 EPA violation(s) on record, with the most recent in 2025. Violation types include MR.
How many people does WILLISTON WATER DEPT serve?
WILLISTON WATER DEPT serves approximately 7,259 people, Vermont. The system provides water to 1 community: Williston.
What type of water does WILLISTON WATER DEPT provide?
WILLISTON WATER DEPT 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 VT0005098.
How does WILLISTON WATER DEPT compare to other utilities in Vermont?
WILLISTON WATER DEPT scores 95/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our Vermont state page for a full comparison of water systems.