All water systems in New Hampshire
2,451 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Hooksett Village Water Pct Hooksett · Merrimack County |
3,000 | 0 | 0 | |
|
Little Pond Estates Bedford · Hillsborough County |
3,000 | 0 | 0 | |
|
Woodstock Water Dept Woodstock · Grafton County |
2,950 | 0 | 0 | |
|
Charlestown Water Works Charlestown · Sullivan County |
2,850 | 1 | 0 | |
|
Winchester Water Dept Winchester · Cheshire County |
2,800 | 0 | 0 | |
|
Conway Water and Sewer Conway · Carroll County |
2,745 | 1 | 1 | |
|
Groveton Water Sys Northumberland · Coos County |
2,650 | 0 | 0 | |
|
Gorham Water and Sewer Dept Gorham · Coos County |
2,630 | 0 | 0 | |
|
Lancaster Water Dept Lancaster · Coos County |
2,500 | 0 | 0 | |
|
Tilton Northfield Water Dist Northfield · Merrimack County |
2,500 | 0 | 0 | |
|
Locke Lake Barnstead · Belknap County |
2,308 | 0 | 0 | |
|
NH Motor Speedway Loudon · Merrimack County |
2,300 | 0 | 0 | |
|
Paradise Shores Moultonborough · Carroll County |
2,060 | 1 | 0 | |
|
Hillsborough Water Works Hillsborough · Hillsborough County |
2,000 | 0 | 0 | |
|
Hollis Sch Dist Hollis · Hillsborough County |
2,000 | 0 | 0 | |
|
Woodsville Water and Light Haverhill · Grafton County |
1,950 | 1 | 0 | |
|
Alton Water Works Alton · Belknap County |
1,800 | 1 | 0 | |
|
North Hinsdale Water Dept Hinsdale · Cheshire County |
1,800 | 0 | 0 | |
|
Wilton Water Works Wilton · Hillsborough County |
1,790 | 2 | 2 | |
|
Bethlehem Village Dist Bethlehem · Grafton County |
1,750 | 2 | 1 | |
|
N Swanzey Water and Fire Prct Swanzey · Cheshire County |
1,700 | 0 | 0 | |
|
Rollinsford Water Sewer Dist Rollinsford · Strafford County |
1,688 | 1 | 0 | |
|
Sunapee Water Works Sunapee · Sullivan County |
1,680 | 0 | 0 | |
|
Whitefield Water Whitefield · Coos County |
1,640 | 0 | 0 | |
|
Franklin Pierce University Rindge · Cheshire County |
1,638 | 1 | 0 | |
|
Pittsfield Aqueduct Pittsfield · Merrimack County |
1,625 | 0 | 0 | |
|
Belmont Water Dept Belmont · Belknap County |
1,612 | 0 | 0 | |
|
Exeter High Sch Exeter · Rockingham County |
1,605 | 2 | 1 | |
|
Contoocook Village Pct Hopkinton · Merrimack County |
1,600 | 3 | 0 | |
|
Epping Water and Sewer Dept Epping · Rockingham County |
1,600 | 2 | 0 | |
|
Hinsdale Water Dept/downtown Hinsdale · Cheshire County |
1,600 | 0 | 0 | |
|
Ashland Water Dept Ashland · Grafton County |
1,525 | 1 | 1 | |
|
Crotched Mountain Ski Area Bennington · Hillsborough County |
1,500 | 2 | 0 | |
|
W Valley Ski Area Base Lodge Waterville Valley · Grafton County |
1,500 | 0 | 0 | |
|
Gunstock Acres Village Dist Gilford · Belknap County |
1,440 | 4 | 0 | |
|
Sanbornville Water Dept Wakefield · Carroll County |
1,425 | 2 | 0 | |
|
Drew Woods Derry · Rockingham County |
1,413 | 0 | 0 | |
|
Rockingham County Complex Brentwood · Rockingham County |
1,387 | 1 | 0 | |
|
Enfield Water Dept Enfield · Grafton County |
1,345 | 2 | 0 | |
|
Golden Brook Sch Windham · Rockingham County |
1,314 | 0 | 0 | |
|
Colebrook Water Works Colebrook · Coos County |
1,300 | 2 | 1 | |
|
Emerald Lake Hillsborough · Hillsborough County |
1,300 | 3 | 2 | |
|
Rogers Campground Lancaster · Coos County |
1,250 | 2 | 1 | |
|
Waterville Estate Vlg Dist/w Campton · Grafton County |
1,250 | 2 | 0 | |
|
Westward Shores Campground Ossipee · Carroll County |
1,225 | 0 | 0 | |
|
Monadnock Regional High Sch Swanzey · Cheshire County |
1,202 | 1 | 1 | |
|
MT Washington State Park Sargents Purchase · Coos County |
1,200 | 2 | 0 | |
|
Troy Water Works Troy · Cheshire County |
1,200 | 0 | 0 | |
|
Village District of Eidelweiss Madison · Carroll County |
1,200 | 3 | 0 | |
|
Hillsborough Cnty Yth Cntr New Boston · Hillsborough County |
1,150 | 1 | 1 |
About this data
Rules violated counts the rules a system was in violation of in the past three years, including monitoring and reporting lapses; one rule can carry several violations. Unresolved is the number of those rules currently in violation at EPA's latest data refresh.
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.