F0/100
SEABROOK WATER DEPT — Water Quality Report 2026
Serving 14,000 people · New Hampshire
Water Source
Groundwater
County
—
System ID
NH2111010
Violations
221
Contaminant Test Results
4 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.48 mg/L | 1.30 mg/L | Over Limit |
PFOS | 0.005 µg/L | 0.004 µg/L | Over Limit |
PFOA | 0.005 µg/L | 0.004 µg/L | Over Limit |
Lead (90th percentile) | 0.003 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
3
Violations (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Monitoring violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: January 10, 2025 – January 21, 2025Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Monitoring Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: December 1, 2024 – January 1, 2025Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Failed to conduct Level 1 Assessment
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: August 14, 2021 – August 27, 2021Rule: Consumer Confidence 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 SEABROOK WATER DEPT
Is SEABROOK WATER DEPT water safe to drink?
SEABROOK WATER DEPT water receives a grade of F (0/100), which is considered failing. 3 contaminant(s) exceed EPA legal limits and 221 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has SEABROOK WATER DEPT detected?
67 contaminants were tested in SEABROOK WATER DEPT's water. Notable contaminants include PFOS, PFOA, Copper (90th percentile), Lead (90th percentile). 3 exceed EPA legal limits (MCLs). 4 exceed EPA health goals (MCLGs).
Does SEABROOK WATER DEPT have any EPA violations?
Yes, SEABROOK WATER DEPT has 221 EPA violation(s) on record, with the most recent in 2025. Violation types include RPT, MON, MR. 29 are health-based violations.
How many people does SEABROOK WATER DEPT serve?
SEABROOK WATER DEPT serves approximately 14,000 people, New Hampshire. The system provides water to 1 community: Seabrook.
What type of water does SEABROOK WATER DEPT provide?
SEABROOK WATER DEPT sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is NH2111010.
How does SEABROOK WATER DEPT compare to other utilities in New Hampshire?
SEABROOK WATER DEPT scores 0/100 with a grade of F (failing). This score suggests significant water quality concerns relative to other utilities. Visit our New Hampshire state page for a full comparison of water systems.