Water quality in Loudon, New Hampshire
Loudon 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 |
|---|---|---|---|---|
| Presidential Pines/upper Loudon |
60 | 2 | 0.9 mi | |
| Voa/nne Senior Housing Loudon |
50 | 0 | 1.0 mi | |
| Villages at Loudon Loudon |
250 | 0 | 1.1 mi | |
| Freedom Hill/pine Ridge Est Loudon |
370 | 3 | 2.2 mi | |
| Kos Manufactured Housing Cmnty Loudon |
137 | 1 | 2.3 mi | |
| Flintlock Apts Loudon |
30 | 1 | 3.2 mi | |
| Robinsons Mhp/upper Chichester |
55 | 0 | 3.8 mi | |
| Canterbury Spruces Housing Canterbury |
25 | 0 | 5.6 mi | |
| Griggs Mobile Homes Pittsfield |
73 | 0 | 6.0 mi | |
| Concord Water Dept Concord |
44,215 | 0 | 6.2 mi | |
| Borough RD Apartments Pembroke |
30 | 0 | 6.4 mi | |
| Epsom Healthcare Ctr Epsom |
240 | 0 | 6.9 mi | |
| Colby Brook Estates Epsom |
68 | 0 | 7.0 mi | |
| Pittsfield Aqueduct Pittsfield |
1,625 | 0 | 7.0 mi | |
| Meadow Brook Epsom |
75 | 0 | 7.3 mi | |
| Epsom Village Water District Epsom |
800 | 0 | 7.9 mi | |
| Kings Towne MHP Epsom |
350 | 0 | 8.0 mi | |
| Sheltering Pines MHP Epsom |
125 | 2 | 8.1 mi | |
| Penacook Boscawen Water Pct Boscawen |
3,800 | 0 | 8.6 mi | |
| Canterbury Crossings Northfield |
35 | 0 | 8.6 mi | |
| Kings Grant Epsom |
99 | 3 | 8.8 mi | |
| Cross Mill Village Northfield |
28 | 0 | 8.8 mi | |
| Meeting House Water Pembroke |
35 | 1 | 8.9 mi | |
| Highlands Village District Northfield |
95 | 0 | 9.1 mi | |
| Cottages at Windchimes Bow |
75 | 0 | 9.9 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 Loudon 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.