A86/100
BERLIN WATER WORKS — Water Quality Report 2026
Serving 9,575 people · New Hampshire
Water Source
Surface Water
County
—
System ID
NH0231010
Violations
2
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.71 mg/L | 1.30 mg/L | Over Limit |
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Monitoring / Reporting Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: December 30, 2021 – January 19, 2022Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
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 BERLIN WATER WORKS
Is BERLIN WATER WORKS water safe to drink?
BERLIN WATER WORKS water receives a grade of A (86/100), which is considered excellent. Out of 32 contaminants tested, 1 exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has BERLIN WATER WORKS detected?
32 contaminants were tested in BERLIN WATER WORKS's water. Notable contaminants include Copper (90th percentile). 1 exceed EPA legal limits (MCLs). 1 exceed EPA health goals (MCLGs).
Does BERLIN WATER WORKS have any EPA violations?
Yes, BERLIN WATER WORKS has 2 EPA violation(s) on record, with the most recent in 2021. Violation types include MR, MCL. 1 are health-based violations.
How many people does BERLIN WATER WORKS serve?
BERLIN WATER WORKS serves approximately 9,575 people, New Hampshire. The system provides water to 1 community: Berlin.
What type of water does BERLIN WATER WORKS provide?
BERLIN WATER WORKS sources its water from surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is NH0231010.
How does BERLIN WATER WORKS compare to other utilities in New Hampshire?
BERLIN WATER WORKS scores 86/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our New Hampshire state page for a full comparison of water systems.