F6/100
PLAINVILLE WATER DEPARTMENT — Water Quality Report 2026
Serving 8,805 people · Massachusetts
Water Source
Groundwater Under Influence of Surface Water
County
—
System ID
MA4238000
Violations
28
Contaminant Test Results
5 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.67 mg/L | 1.30 mg/L | Over Limit |
PFOS | 0.006 µg/L | 0.004 µg/L | Over Limit |
PFOA | 0.004 µg/L | 0.004 µg/L | Over Limit |
chlorate | 310.00 µg/L | — | Above Goal |
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2018.
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 PLAINVILLE WATER DEPARTMENT
Is PLAINVILLE WATER DEPARTMENT water safe to drink?
PLAINVILLE WATER DEPARTMENT water receives a grade of F (6/100), which is considered failing. 3 contaminant(s) exceed EPA legal limits and 28 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has PLAINVILLE WATER DEPARTMENT detected?
52 contaminants were tested in PLAINVILLE WATER DEPARTMENT's water. Notable contaminants include PFOS, Copper (90th percentile), PFOA, Lead (90th percentile), chlorate. 3 exceed EPA legal limits (MCLs). 5 exceed EPA health goals (MCLGs).
Does PLAINVILLE WATER DEPARTMENT have any EPA violations?
Yes, PLAINVILLE WATER DEPARTMENT has 28 EPA violation(s) on record, with the most recent in 2018. Violation types include TT, MCL, Other. 9 are health-based violations.
How many people does PLAINVILLE WATER DEPARTMENT serve?
PLAINVILLE WATER DEPARTMENT serves approximately 8,805 people, Massachusetts. The system provides water to 1 community: Plainville.
What type of water does PLAINVILLE WATER DEPARTMENT provide?
PLAINVILLE WATER DEPARTMENT sources its water from groundwater under influence of surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is MA4238000.
How does PLAINVILLE WATER DEPARTMENT compare to other utilities in Massachusetts?
PLAINVILLE WATER DEPARTMENT scores 6/100 with a grade of F (failing). This score suggests significant water quality concerns relative to other utilities. Visit our Massachusetts state page for a full comparison of water systems.