C52/100
AYER DPW WATER DIVISION — Water Quality Report 2026
Serving 8,479 people · Massachusetts
Water Source
Groundwater
County
—
System ID
MA2019000
Violations
29
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.40 mg/L | 1.30 mg/L | Over Limit |
Lead (90th percentile) | 0.003 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
2
Violations (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: July 1, 2023 – February 29, 2024Rule: Ground Water RuleEnforcement: Formal — state order issued
TIER 3Resolved
Monitoring / Reporting Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: July 1, 2021 – November 28, 2022Rule: 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 AYER DPW WATER DIVISION
Is AYER DPW WATER DIVISION water safe to drink?
AYER DPW WATER DIVISION water receives a grade of C (52/100), which is considered fair. 1 contaminant(s) exceed EPA legal limits and 29 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has AYER DPW WATER DIVISION detected?
32 contaminants were tested in AYER DPW WATER DIVISION's water. Notable contaminants include Copper (90th percentile), Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).
Does AYER DPW WATER DIVISION have any EPA violations?
Yes, AYER DPW WATER DIVISION has 29 EPA violation(s) on record, with the most recent in 2023. Violation types include MR, Other, MCL. 2 are health-based violations.
How many people does AYER DPW WATER DIVISION serve?
AYER DPW WATER DIVISION serves approximately 8,479 people, Massachusetts. The system provides water to 1 community: Ayer.
What type of water does AYER DPW WATER DIVISION provide?
AYER DPW WATER DIVISION sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is MA2019000.
How does AYER DPW WATER DIVISION compare to other utilities in Massachusetts?
AYER DPW WATER DIVISION scores 52/100 with a grade of C (fair). This score indicates room for improvement compared to other utilities. Visit our Massachusetts state page for a full comparison of water systems.