B63/100
AQUARION WATER/NH — Water Quality Report 2026
Serving 34,000 people · Connecticut
Water Source
Groundwater
County
—
System ID
NH1051010
Violations
9
Contaminant Test Results
3 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.36 mg/L | 1.30 mg/L | Over Limit |
PFOA | 0.005 µg/L | 0.004 µg/L | Over Limit |
PFOS | 0.004 µg/L | 0.004 µg/L | Over Limit |
EPA Violation History
2
Violations (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Failed Level 2 Assessment under Revised Total Coliform Rule
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: July 1, 2024 – October 1, 2024Rule: Stage 2 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved
Failed Level 2 Assessment under Revised Total Coliform Rule
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: July 1, 2024 – October 1, 2024Rule: Stage 2 DBPREnforcement: 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 AQUARION WATER/NH
Is AQUARION WATER/NH water safe to drink?
AQUARION WATER/NH water receives a grade of B (63/100), which is considered good. Out of 67 contaminants tested, 3 exceed EPA legal limits. 3 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has AQUARION WATER/NH detected?
67 contaminants were tested in AQUARION WATER/NH's water. Notable contaminants include PFOA, PFOS, Copper (90th percentile). 3 exceed EPA legal limits (MCLs). 3 exceed EPA health goals (MCLGs).
Does AQUARION WATER/NH have any EPA violations?
Yes, AQUARION WATER/NH has 9 EPA violation(s) on record, with the most recent in 2024. Violation types include MR, Other, MCL. 1 are health-based violations.
How many people does AQUARION WATER/NH serve?
AQUARION WATER/NH serves approximately 34,000 people, Connecticut. The system provides water to 1 community: Hampton.
What type of water does AQUARION WATER/NH provide?
AQUARION WATER/NH sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is NH1051010.
How does AQUARION WATER/NH compare to other utilities in Connecticut?
AQUARION WATER/NH scores 63/100 with a grade of B (good). This is an above-average performance for utilities statewide. Visit our Connecticut state page for a full comparison of water systems.