COUNTY WATER-SYSTEM LEDGER
Merrimack, New Hampshire
EPA’s September 2026 export lists 9 active community water systems serving Merrimack, 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 Merrimack, New Hampshire
EPA associates 9 covered systems with Merrimack, New Hampshire; their reported population-served values total 76,815 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 |
|---|---|---|---|
| Concord Water DeptNH0501010 | 44,215 | Surface water | No current violation flagged |
| Franklin Water WorksNH0851010 | 7,200 | Ground water | No current violation flagged |
| Pembroke Water WorksNH1861010 | 5,200 | Ground water | No current violation flagged |
| Central Hooksett Water PctNH1181010 | 4,650 | Surface water purchased | No current violation flagged |
| Penacook Boscawen Water PctNH0251010 | 3,800 | Ground water | No current violation flagged |
| New London Springfield WaterNH1721010 | 3,250 | Ground water | No current violation flagged |
| Cogswell Springs Water WorksNH1121010 | 3,000 | Ground water | No current violation flagged |
| Hooksett Village Water PctNH1181020 | 3,000 | Ground water | No current violation flagged |
| Tilton Northfield Water DistNH2351010 | 2,500 | Ground water | No current violation flagged |
02 / SOURCE MIX
Primary water sources for Merrimack, New Hampshire
EPA classifies 9 systems serving Merrimack, New Hampshire across 3 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.