F0/100
HILLSBOROUGH WATER WORKS — Water Quality Report 2026
Serving 2,000 people · New Hampshire
Water Source
Surface Water
County
—
System ID
NH1141010
Violations
173
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.033 mg/L | 0.015 mg/L | Over Limit |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2018.
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 HILLSBOROUGH WATER WORKS
Is HILLSBOROUGH WATER WORKS water safe to drink?
HILLSBOROUGH WATER WORKS water receives a grade of F (0/100), which is considered failing. 1 contaminant(s) exceed EPA legal limits and 173 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has HILLSBOROUGH WATER WORKS detected?
4 contaminants were tested in HILLSBOROUGH WATER WORKS's water. Notable contaminants include Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 1 exceed EPA health goals (MCLGs).
Does HILLSBOROUGH WATER WORKS have any EPA violations?
Yes, HILLSBOROUGH WATER WORKS has 173 EPA violation(s) on record, with the most recent in 2018. Violation types include MR, MCL, TT. 73 are health-based violations.
How many people does HILLSBOROUGH WATER WORKS serve?
HILLSBOROUGH WATER WORKS serves approximately 2,000 people, New Hampshire. The system provides water to 1 community: Hillsborough.
What type of water does HILLSBOROUGH WATER WORKS provide?
HILLSBOROUGH WATER WORKS 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 NH1141010.
How does HILLSBOROUGH WATER WORKS compare to other utilities in New Hampshire?
HILLSBOROUGH WATER WORKS 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.