A94/100
WILLIAMSTOWN WATER DEPT — Water Quality Report 2026
Serving 7,326 people · Massachusetts
Water Source
Groundwater
County
—
System ID
MA1341000
Violations
6
Contaminant Test Results
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2015.
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 WILLIAMSTOWN WATER DEPT
Is WILLIAMSTOWN WATER DEPT water safe to drink?
WILLIAMSTOWN WATER DEPT water receives a grade of A (94/100), which is considered excellent. Out of 31 contaminants tested, none exceed EPA legal limits. The water meets federal safety standards.
What contaminants has WILLIAMSTOWN WATER DEPT detected?
31 contaminants were tested in WILLIAMSTOWN WATER DEPT's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does WILLIAMSTOWN WATER DEPT have any EPA violations?
Yes, WILLIAMSTOWN WATER DEPT has 6 EPA violation(s) on record, with the most recent in 2015. Violation types include MR, Other.
How many people does WILLIAMSTOWN WATER DEPT serve?
WILLIAMSTOWN WATER DEPT serves approximately 7,326 people, Massachusetts. The system provides water to 1 community: Williamstown.
What type of water does WILLIAMSTOWN WATER DEPT provide?
WILLIAMSTOWN WATER DEPT sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is MA1341000.
How does WILLIAMSTOWN WATER DEPT compare to other utilities in Massachusetts?
WILLIAMSTOWN WATER DEPT scores 94/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our Massachusetts state page for a full comparison of water systems.