CITY WATER-SYSTEM LEDGER
Portsmouth, New Hampshire
EPA’s September 2026 export lists 2 active community water systems serving Portsmouth, New Hampshire, with 0 current-violation flags and 0 serious-violator flags among the covered systems.
Source: EPA SDWIS system-search export · Active community systems serving 2,500+ people · Snapshot 13 Sep 2026
01 / SYSTEMS
Water systems serving Portsmouth, New Hampshire
EPA associates 2 covered systems with Portsmouth, New Hampshire; their reported population-served values total 42,900 and may overlap.
Ordered by reported population served. Open any record for separate health, monitoring, notice, other, and serious-violator flags.
| Water system | Population served | Primary source | Current export status |
|---|---|---|---|
| Portsmouth Water WorksNH1951010 | 33,000 | Surface water | No current violation flagged |
| Pease Trade PortNH1951020 | 9,900 | Ground water | No current violation flagged |
02 / SOURCE MIX
Primary water sources for Portsmouth, New Hampshire
EPA classifies 2 systems serving Portsmouth, New Hampshire across 2 primary-source categories; Surface water is the largest category with 1 systems.
It is the sum of each listed system's reported population served, not a census estimate. Service areas can overlap and some systems list multiple cities or counties.