Is HILLSBOROUGH WATER WORKS's water safe to drink?
HILLSBOROUGH WATER WORKS has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 2,000 people get their water from it, across 907 connections.
Ranked against every other system in this dataset
HILLSBOROUGH WATER WORKS has 174 violations on record in total, 73 of thems health-based - ranking it 136th of 12,903 systems by violation count, the 99th percentile nationally.
Against the NH average
Among the 62 NH systems in this dataset, the average is 8.6 health-based violations - HILLSBOROUGH WATER WORKS's 73 is above that. The clean-record guide covers what a comparison like this can hide.
Most recent violation on record
HILLSBOROUGH WATER WORKS's most recent violation on record is dated 2018-01-01, with the most recent health-based one dated 2014-01-10. Last reported to EPA: 06/23/2026.
The concern categories on record
HILLSBOROUGH WATER WORKS's flagged contaminants and rule violations, grouped by what they actually mean for a filter choice rather than left as EPA's raw code list:
- Microbial contamination / treatment technique - flagged from: Coliform (TCR); Surface Water Treatment Rule
- Disinfection byproducts - flagged from: TTHM; Total Haloacetic Acids (HAA5)
The most severe category on record is microbial contamination / treatment technique, which points toward a microbial-class filter if you want to address it directly.
What HILLSBOROUGH WATER WORKS's record does not cover
HILLSBOROUGH WATER WORKS's numbers here come from its own required reporting to EPA under the Safe Drinking Water Act, not from an independent test of your glass of water. This record - 73 health-based violations on file for HILLSBOROUGH WATER WORKS - stops at the meter and cannot see household plumbing on the other side of it. The guide to what this data misses covers that gap.