D37/100
SANDWICH WATER DISTRICT — Water Quality Report 2026
Serving 23,000 people · Massachusetts
Water Source
Groundwater
County
—
System ID
MA4261000
Violations
15
Contaminant Test Results
EPA Violation History
1
Violation (last 5yr)
1
Unresolved
0
Health-Related
TIER 3Unresolved
Monitoring Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: April 1, 2025 – April 30, 2025Rule: Total Coliform RuleEnforcement: Formal — state order issuedVerify on EPA.gov
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 SANDWICH WATER DISTRICT
Is SANDWICH WATER DISTRICT water safe to drink?
SANDWICH WATER DISTRICT water receives a grade of D (37/100), which is considered poor. 0 contaminant(s) exceed EPA legal limits and 15 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has SANDWICH WATER DISTRICT detected?
66 contaminants were tested in SANDWICH WATER DISTRICT's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does SANDWICH WATER DISTRICT have any EPA violations?
Yes, SANDWICH WATER DISTRICT has 15 EPA violation(s) on record, with the most recent in 2025. Violation types include MON, MCL, MR. 12 are health-based violations.
How many people does SANDWICH WATER DISTRICT serve?
SANDWICH WATER DISTRICT serves approximately 23,000 people, Massachusetts. The system provides water to 1 community: Sandwich.
What type of water does SANDWICH WATER DISTRICT provide?
SANDWICH WATER DISTRICT sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is MA4261000.
How does SANDWICH WATER DISTRICT compare to other utilities in Massachusetts?
SANDWICH WATER DISTRICT scores 37/100 with a grade of D (poor). This score suggests significant water quality concerns relative to other utilities. Visit our Massachusetts state page for a full comparison of water systems.