A91/100
UNH/DURHAM WATER SYS — Water Quality Report 2026
Serving 16,000 people · New Hampshire
Water Source
Surface Water
County
—
System ID
NH0691010
Violations
2
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
chlorate | 310.00 µg/L | — | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2003.
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 UNH/DURHAM WATER SYS
Is UNH/DURHAM WATER SYS water safe to drink?
UNH/DURHAM WATER SYS water receives a grade of A (91/100), which is considered excellent. Out of 69 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has UNH/DURHAM WATER SYS detected?
69 contaminants were tested in UNH/DURHAM WATER SYS's water. Notable contaminants include chlorate. No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does UNH/DURHAM WATER SYS have any EPA violations?
Yes, UNH/DURHAM WATER SYS has 2 EPA violation(s) on record, with the most recent in 2003. Violation types include MR, MCL. 1 are health-based violations.
How many people does UNH/DURHAM WATER SYS serve?
UNH/DURHAM WATER SYS serves approximately 16,000 people, New Hampshire. The system provides water to 1 community: Durham.
What type of water does UNH/DURHAM WATER SYS provide?
UNH/DURHAM WATER SYS 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 NH0691010.
How does UNH/DURHAM WATER SYS compare to other utilities in New Hampshire?
UNH/DURHAM WATER SYS scores 91/100 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.