F14/100
LITTLETON WATER DEPARTMENT — Water Quality Report 2026
Serving 9,611 people · Massachusetts
Water Source
Groundwater
County
—
System ID
MA2158000
Violations
26
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.70 mg/L | 1.30 mg/L | Over Limit |
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: July 1, 2023 – February 29, 2024Rule: 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 LITTLETON WATER DEPARTMENT
Is LITTLETON WATER DEPARTMENT water safe to drink?
LITTLETON WATER DEPARTMENT water receives a grade of F (14/100), which is considered failing. 1 contaminant(s) exceed EPA legal limits and 26 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has LITTLETON WATER DEPARTMENT detected?
32 contaminants were tested in LITTLETON WATER DEPARTMENT's water. Notable contaminants include Copper (90th percentile). 1 exceed EPA legal limits (MCLs). 1 exceed EPA health goals (MCLGs).
Does LITTLETON WATER DEPARTMENT have any EPA violations?
Yes, LITTLETON WATER DEPARTMENT has 26 EPA violation(s) on record, with the most recent in 2023. Violation types include MR, MCL, Other. 13 are health-based violations.
How many people does LITTLETON WATER DEPARTMENT serve?
LITTLETON WATER DEPARTMENT serves approximately 9,611 people, Massachusetts. The system provides water to 1 community: Littleton.
What type of water does LITTLETON WATER DEPARTMENT provide?
LITTLETON WATER DEPARTMENT sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is MA2158000.
How does LITTLETON WATER DEPARTMENT compare to other utilities in Massachusetts?
LITTLETON WATER DEPARTMENT scores 14/100 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.