PlainWater

HILLSBOROUGH WATER WORKS

PWS ID: NH1141010 · HILLSBOROUGH, New Hampshire 03244

Population Served
2,000
Total Violations
737
Health-Based Violations
354
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
907
County
Hillsborough
School/Daycare
No
MCL Violations
353
Monitoring Violations
376
Treatment Tech Violations
1

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
TTHM MCL 187 2014
Total Haloacetic Acids (HAA5) MCL 144 2014
Coliform (TCR) MCL 22 2008
Nitrate MR 8 1994
Coliform (TCR) MR 7 2005
cis-1,2-Dichloroethylene MR 7 1996
Xylenes, Total MR 7 1996
Chromium MR 7 1996
CYANIDE MR 7 1996
o-Dichlorobenzene MR 7 1996
Fluoride MR 7 1996
p-Dichlorobenzene MR 7 1996
Mercury MR 7 1996
Vinyl chloride MR 7 1996
1,1-Dichloroethylene MR 7 1996
Selenium MR 7 1996
trans-1,2-Dichloroethylene MR 7 1996
1,1,1-Trichloroethane MR 7 1996
Carbon tetrachloride MR 7 1996
1,2-Dichloropropane MR 7 1996
Trichloroethylene MR 7 1996
1,1,2-Trichloroethane MR 7 1996
CHLOROBENZENE MR 7 1996
Toluene MR 7 1996
Ethylbenzene MR 7 1996
Styrene MR 7 1996
Arsenic MR 7 1996
1,2,4-Trichlorobenzene MR 7 1996
Barium MR 7 1996
Thallium, Total MR 7 1996
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.