C50/100
WINCHESTER WATER DEPT — Water Quality Report 2026
Serving 22,970 people · Massachusetts
Water Source
Surface Water
County
—
System ID
MA3344000
Violations
31
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.004 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2014.
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 WINCHESTER WATER DEPT
Is WINCHESTER WATER DEPT water safe to drink?
WINCHESTER WATER DEPT water receives a grade of C (50/100), which is considered fair. 0 contaminant(s) exceed EPA legal limits and 31 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has WINCHESTER WATER DEPT detected?
69 contaminants were tested in WINCHESTER WATER DEPT's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does WINCHESTER WATER DEPT have any EPA violations?
Yes, WINCHESTER WATER DEPT has 31 EPA violation(s) on record, with the most recent in 2014. Violation types include MR, MCL, TT. 4 are health-based violations.
How many people does WINCHESTER WATER DEPT serve?
WINCHESTER WATER DEPT serves approximately 22,970 people, Massachusetts. The system provides water to 1 community: Winchester.
What type of water does WINCHESTER WATER DEPT provide?
WINCHESTER WATER DEPT sources its water from surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is MA3344000.
How does WINCHESTER WATER DEPT compare to other utilities in Massachusetts?
WINCHESTER WATER DEPT scores 50/100 with a grade of C (fair). This score indicates room for improvement compared to other utilities. Visit our Massachusetts state page for a full comparison of water systems.