Water Quality: Portsmouth, NH
10 water systems • 44,419 people served
Multiple Health Violations68
Total Violations
17
Health-Based Violations
10
Water Systems
44,419
Population Served
Water Quality Summary
Portsmouth has 17 health-based violations on record, meaning one or more contaminants were found above EPA-established safe levels. Contaminants involved: Chlorine Dioxide, Disinfection Byproducts, E. coli, TTHM. In total, 68 violations are on record for 10 water systems serving 44,419 people.
Contaminants Found
Chlorine Dioxide
Disinfection Byproducts
E. coli
TTHM
Water Systems Serving Portsmouth
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| PORTSMOUTH WATER WORKS | NH1951010 | Surface Water | 33,000 | 0 |
| PEASE TRADE PORT | NH1951020 | Groundwater | 9,900 | 0 |
| NEW CASTLE WATER WORKS | NH1661010 | Surface Water | 910 | 16 |
| HEMLOCK HAVEN | NH1053020 | Groundwater | 207 | 3 |
| PIPER MEADOWS PRIVATE COMMUNTY | NH0023010 | Groundwater | 125 | 17 |
| CEDAR CREEK | NH0512200 | Groundwater | 105 | 18 |
| FOUR SEASONS MOBILE HOME PARK | NH1053010 | Groundwater | 55 | 2 |
| HIGH PASTURES AT BLACK MTN | NH1212090 | Groundwater | 47 | 1 |
| BLUEBERRY VILLAGE CONDOS | NH0162180 | Groundwater | 40 | 3 |
| CEDAR WOOD ESTATES | NH1332040 | Groundwater | 30 | 8 |
Concerned About Your Water?
A home water filter can remove common contaminants. NSF-certified filters are tested against EPA standards.
Consider a reverse osmosis system for comprehensive filtration or a carbon filter for basic improvement.
Data Sources
Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). Data includes all recorded violations for active community water systems.