What's in CHARLESTOWN WATER WORKS's water?

CHARLESTOWN WATER WORKS has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. It serves 2,850 people through 1,250 service connections.

CHARLESTOWN WATER WORKS's record against the rest of the country

CHARLESTOWN WATER WORKS has 11 violations on record in total, 2 of thems health-based - ranking it 6,507th of 12,903 systems by violation count, the 50th percentile nationally.

Against the NH average

NH's 62 covered systems average 8.6 health-based violations each; CHARLESTOWN WATER WORKS carries 2, not more than typical for the state. See the lead and copper guide for why lead counts differently.

Most recent violation on record

CHARLESTOWN WATER WORKS's most recent violation on record is dated 2025-01-07, with the most recent health-based one dated 1991-01-10. Last reported to EPA: 06/23/2026.

The concern categories on record

CHARLESTOWN 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)

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 CHARLESTOWN WATER WORKS's record does not cover

Everything on this page is CHARLESTOWN WATER WORKS's own reported record under the Safe Drinking Water Act - a regulatory filing, not a sample of your tap. Between the utility's meter and CHARLESTOWN WATER WORKS's customers' taps is household plumbing, invisible to a system-level record ranked 6,507th of 12,903 by violation count. The guide to what this data misses covers that gap.