Water quality in Henniker, New Hampshire
Henniker is in Merrimack County. 246 active public water systems serve the county; 80 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Merrimack County
62 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Cogswell Springs Water Works Henniker |
3,000 | 0 | 1.5 mi | |
| Elm Brook Village Hopkinton |
90 | 0 | 3.6 mi | |
| Contoocook Village Pct Hopkinton |
1,600 | 3 | 4.4 mi | |
| Pleasant Pond Coop and Cmpgrnd Warner |
218 | 0 | 4.8 mi | |
| The Meadows Hopkinton |
200 | 0 | 5.5 mi | |
| Hopkinton Village Pct Hopkinton |
215 | 1 | 6.2 mi | |
| Warner Village Water Dist Warner |
660 | 0 | 7.1 mi | |
| Deer Meadows Hopkinton |
150 | 2 | 8.2 mi | |
| Evergreen Drive Water Bow |
80 | 0 | 9.0 mi | |
| Pillsbury Lake/franklin Pierce Webster |
75 | 2 | 9.1 mi | |
| Pillsbury Lake/peninsula Webster |
90 | 0 | 9.3 mi | |
| Bella Brook Water Bow |
50 | 0 | 9.7 mi | |
| Fisherfield Townhouses Bradford |
40 | 0 | 10.4 mi | |
| Abenaki Water/white Rock Water Bow |
238 | 0 | 12.1 mi | |
| Penacook Boscawen Water Pct Boscawen |
3,800 | 0 | 12.5 mi | |
| Cottages at Windchimes Bow |
75 | 0 | 12.9 mi | |
| White Rock Senior Living Bow |
120 | 0 | 13.0 mi | |
| Concord Water Dept Concord |
44,215 | 0 | 13.1 mi | |
| Stone Sled Farm Bow |
113 | 0 | 13.9 mi | |
| Newbury Elderly Housing Newbury |
51 | 2 | 15.5 mi | |
| Meeting House Water Pembroke |
35 | 1 | 15.7 mi | |
| Bow Municipal Water System Bow |
150 | 0 | 15.8 mi | |
| Chalk Pond Water Newbury |
208 | 0 | 16.0 mi | |
| Canterbury Spruces Housing Canterbury |
25 | 0 | 16.0 mi | |
| Borough RD Apartments Pembroke |
30 | 0 | 16.4 mi |
Non-community systems in Merrimack County (183: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Merrimack County, nearest to Henniker first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility. Distances are measured to the centre of the service area EPA publishes for the system or, for systems without one, to the centre of the first town EPA lists the system as serving, from Census Bureau county subdivision files or the centre of the first town EPA lists the system as serving, from Census Bureau place files.
Town locations and ZIP code areas come from U.S. Census Bureau 2020 files.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The New Hampshire records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet.