F0/100
MARSHFIELD WATER DEPARTMENT — Water Quality Report 2026
Serving 34,000 people · Massachusetts
Water Source
Groundwater
County
—
System ID
MA4171000
Violations
67
Contaminant Test Results
3 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.35 mg/L | 1.30 mg/L | Over Limit |
PFOA | 0.007 µg/L | 0.004 µg/L | Over Limit |
Lead (90th percentile) | 0.004 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
5
Violations (last 5yr)
2
Unresolved
0
Health-Related
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2022 – August 15, 2022Enforcement: Formal — state order issued
TIER 3Resolved
Monitoring violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: April 11, 2022 – January 23, 2025Rule: Total Coliform RuleEnforcement: Formal — state order issued
TIER 3Resolved
Monitoring violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: March 11, 2022 – January 23, 2025Rule: Total Coliform RuleEnforcement: Formal — state order issued
TIER 3Unresolved
Monitoring Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: March 1, 2022 – March 31, 2022Rule: Total Coliform RuleEnforcement: Formal — state order issuedVerify on EPA.gov
TIER 3Unresolved
Monitoring Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: February 1, 2022 – February 28, 2022Rule: 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 MARSHFIELD WATER DEPARTMENT
Is MARSHFIELD WATER DEPARTMENT water safe to drink?
MARSHFIELD WATER DEPARTMENT water receives a grade of F (0/100), which is considered failing. 2 contaminant(s) exceed EPA legal limits and 67 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has MARSHFIELD WATER DEPARTMENT detected?
67 contaminants were tested in MARSHFIELD WATER DEPARTMENT's water. Notable contaminants include PFOA, Copper (90th percentile), Lead (90th percentile). 2 exceed EPA legal limits (MCLs). 3 exceed EPA health goals (MCLGs).
Does MARSHFIELD WATER DEPARTMENT have any EPA violations?
Yes, MARSHFIELD WATER DEPARTMENT has 67 EPA violation(s) on record, with the most recent in 2022. Violation types include Other, RPT, MON. 9 are health-based violations.
How many people does MARSHFIELD WATER DEPARTMENT serve?
MARSHFIELD WATER DEPARTMENT serves approximately 34,000 people, Massachusetts. The system provides water to 1 community: Marshfield.
What type of water does MARSHFIELD WATER DEPARTMENT provide?
MARSHFIELD WATER DEPARTMENT sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is MA4171000.
How does MARSHFIELD WATER DEPARTMENT compare to other utilities in Massachusetts?
MARSHFIELD WATER DEPARTMENT scores 0/100 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.