Water quality for ZIP code 03231
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 |
|---|---|---|---|---|
| Hill Water Works Hill |
600 | 0 | 4.5 mi | |
| Franklin Water Works Franklin |
7,200 | 0 | 5.9 mi | |
| Pound Road Water Works Wilmot |
53 | 2 | 7.9 mi | |
| Tilton Northfield Water Dist Northfield |
2,500 | 0 | 9.1 mi | |
| Seasons at Lake Sunapee New London |
153 | 0 | 10.7 mi | |
| Slope N Shore Club New London |
180 | 0 | 11.1 mi | |
| Highlands Village District Northfield |
95 | 0 | 11.4 mi | |
| Cross Mill Village Northfield |
28 | 0 | 11.5 mi | |
| New London Springfield Water New London |
3,250 | 0 | 12.3 mi | |
| Soda Brook Northfield |
64 | 2 | 12.6 mi | |
| Penacook Boscawen Water Pct Boscawen |
3,800 | 0 | 12.7 mi | |
| Pillsbury Lake/peninsula Webster |
90 | 0 | 13.4 mi | |
| Warner Village Water Dist Warner |
660 | 0 | 13.6 mi | |
| Pillsbury Lake/franklin Pierce Webster |
75 | 2 | 14.0 mi | |
| Canterbury Spruces Housing Canterbury |
25 | 0 | 14.0 mi | |
| Canterbury Crossings Northfield |
35 | 0 | 14.5 mi | |
| Chalk Pond Water Newbury |
208 | 0 | 15.2 mi | |
| Deer Meadows Hopkinton |
150 | 2 | 15.7 mi | |
| Pleasant Pond Coop and Cmpgrnd Warner |
218 | 0 | 15.9 mi | |
| The Meadows Hopkinton |
200 | 0 | 16.3 mi | |
| Contoocook Village Pct Hopkinton |
1,600 | 3 | 16.9 mi | |
| Fisherfield Townhouses Bradford |
40 | 0 | 17.2 mi | |
| Flintlock Apts Loudon |
30 | 1 | 17.5 mi | |
| Newbury Elderly Housing Newbury |
51 | 2 | 17.5 mi | |
| Kos Manufactured Housing Cmnty Loudon |
137 | 1 | 17.5 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.