Water quality for ZIP code 03307
ZIP 03307 covers Loudon in Merrimack County, New Hampshire, one of 28 ZIP codes in the 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 |
|---|---|---|---|---|
| Kos Manufactured Housing Cmnty Loudon |
137 | 1 | 1.8 mi | |
| Presidential Pines/lower Loudon |
51 | 0 | 2.9 mi | |
| Presidential Pines/upper Loudon |
60 | 2 | 2.9 mi | |
| Voa/nne Senior Housing Loudon |
50 | 0 | 4.0 mi | |
| Villages at Loudon Loudon |
250 | 0 | 4.0 mi | |
| Freedom Hill/pine Ridge Est Loudon |
370 | 3 | 5.1 mi | |
| Griggs Mobile Homes Pittsfield |
73 | 0 | 5.2 mi | |
| Canterbury Spruces Housing Canterbury |
25 | 0 | 5.6 mi | |
| Canterbury Crossings Northfield |
35 | 0 | 6.0 mi | |
| Robinsons Mhp/upper Chichester |
55 | 0 | 6.1 mi | |
| Pittsfield Aqueduct Pittsfield |
1,625 | 0 | 6.5 mi | |
| Cross Mill Village Northfield |
28 | 0 | 7.2 mi | |
| Highlands Village District Northfield |
95 | 0 | 7.4 mi | |
| Soda Brook Northfield |
64 | 2 | 7.6 mi | |
| Epsom Healthcare Ctr Epsom |
240 | 0 | 8.6 mi | |
| Colby Brook Estates Epsom |
68 | 0 | 8.8 mi | |
| Concord Water Dept Concord |
44,215 | 0 | 9.0 mi | |
| Penacook Boscawen Water Pct Boscawen |
3,800 | 0 | 9.3 mi | |
| Borough RD Apartments Pembroke |
30 | 0 | 9.3 mi | |
| Meadow Brook Epsom |
75 | 0 | 9.5 mi | |
| Epsom Village Water District Epsom |
800 | 0 | 9.5 mi | |
| Kings Towne MHP Epsom |
350 | 0 | 10.3 mi | |
| Tilton Northfield Water Dist Northfield |
2,500 | 0 | 10.3 mi | |
| Sheltering Pines MHP Epsom |
125 | 2 | 10.4 mi | |
| Kings Grant Epsom |
99 | 3 | 11.2 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, the county this ZIP code lies in, nearest to the ZIP code's centre 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.
ZIP code areas and town boundaries come from the U.S. Census Bureau's 2020 ZCTA 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. Retrieved from ECHO on Oct 11, 2026.