B76/100
CHARLESTOWN WATER WORKS — Water Quality Report 2026
Serving 2,850 people · New Hampshire
Water Source
Groundwater
County
—
System ID
NH0411010
Violations
8
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.019 mg/L | 0.015 mg/L | Over Limit |
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2021 – August 2, 2021Enforcement: 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 CHARLESTOWN WATER WORKS
Is CHARLESTOWN WATER WORKS water safe to drink?
CHARLESTOWN WATER WORKS water receives a grade of B (76/100), which is considered good. Out of 1 contaminants tested, 1 exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has CHARLESTOWN WATER WORKS detected?
1 contaminants were tested in CHARLESTOWN WATER WORKS's water. Notable contaminants include Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 1 exceed EPA health goals (MCLGs).
Does CHARLESTOWN WATER WORKS have any EPA violations?
Yes, CHARLESTOWN WATER WORKS has 8 EPA violation(s) on record, with the most recent in 2021. Violation types include Other, MR, MCL. 2 are health-based violations.
How many people does CHARLESTOWN WATER WORKS serve?
CHARLESTOWN WATER WORKS serves approximately 2,850 people, New Hampshire. The system provides water to 1 community: Charlestown.
What type of water does CHARLESTOWN WATER WORKS provide?
CHARLESTOWN WATER WORKS sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is NH0411010.
How does CHARLESTOWN WATER WORKS compare to other utilities in New Hampshire?
CHARLESTOWN WATER WORKS scores 76/100 with a grade of B (good). This is an above-average performance for utilities statewide. Visit our New Hampshire state page for a full comparison of water systems.