F0/100
MERRIMAC WATER DEPARTMENT — Water Quality Report 2026
Serving 7,193 people · Massachusetts
Water Source
Groundwater
County
—
System ID
MA3180000
Violations
207
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
PFOA | 0.006 µg/L | 0.004 µg/L | Over Limit |
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Failed to issue ongoing public notification
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: June 1, 2021Rule: Ground Water RuleEnforcement: Formal — state order issued
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 MERRIMAC WATER DEPARTMENT
Is MERRIMAC WATER DEPARTMENT water safe to drink?
MERRIMAC WATER DEPARTMENT water receives a grade of F (0/100), which is considered failing. 1 contaminant(s) exceed EPA legal limits and 207 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has MERRIMAC WATER DEPARTMENT detected?
31 contaminants were tested in MERRIMAC WATER DEPARTMENT's water. Notable contaminants include PFOA, Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).
Does MERRIMAC WATER DEPARTMENT have any EPA violations?
Yes, MERRIMAC WATER DEPARTMENT has 207 EPA violation(s) on record, with the most recent in 2021. Violation types include MR, MCL, TT. 11 are health-based violations.
How many people does MERRIMAC WATER DEPARTMENT serve?
MERRIMAC WATER DEPARTMENT serves approximately 7,193 people, Massachusetts. The system provides water to 1 community: Merrimac.
What type of water does MERRIMAC WATER DEPARTMENT provide?
MERRIMAC WATER DEPARTMENT sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is MA3180000.
How does MERRIMAC WATER DEPARTMENT compare to other utilities in Massachusetts?
MERRIMAC 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.