B73/100
ROCKINGHAM COUNTY COMPLEX — Water Quality Report 2026
Serving 1,387 people · New Hampshire
Water Source
Groundwater
County
—
System ID
NH0284010
Violations
3
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 2.41 mg/L | 1.30 mg/L | Over Limit |
Lead (90th percentile) | 0.022 mg/L | 0.015 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: July 1, 2023 – July 17, 2023Rule: 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 ROCKINGHAM COUNTY COMPLEX
Is ROCKINGHAM COUNTY COMPLEX water safe to drink?
ROCKINGHAM COUNTY COMPLEX water receives a grade of B (73/100), which is considered good. Out of 2 contaminants tested, 2 exceed EPA legal limits. 2 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has ROCKINGHAM COUNTY COMPLEX detected?
2 contaminants were tested in ROCKINGHAM COUNTY COMPLEX's water. Notable contaminants include Copper (90th percentile), Lead (90th percentile). 2 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).
Does ROCKINGHAM COUNTY COMPLEX have any EPA violations?
Yes, ROCKINGHAM COUNTY COMPLEX has 3 EPA violation(s) on record, with the most recent in 2023. Violation types include MR, MCL. 2 are health-based violations.
How many people does ROCKINGHAM COUNTY COMPLEX serve?
ROCKINGHAM COUNTY COMPLEX serves approximately 1,387 people, New Hampshire. The system provides water to 1 community: Brentwood.
What type of water does ROCKINGHAM COUNTY COMPLEX provide?
ROCKINGHAM COUNTY COMPLEX sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is NH0284010.
How does ROCKINGHAM COUNTY COMPLEX compare to other utilities in New Hampshire?
ROCKINGHAM COUNTY COMPLEX scores 73/100 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.