Water quality for ZIP code 03230
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 |
|---|---|---|---|---|
| Andover Village Dist Andover |
650 | 6 | 6.1 mi | |
| Slope N Shore Club New London |
180 | 0 | 6.7 mi | |
| Seasons at Lake Sunapee New London |
153 | 0 | 8.1 mi | |
| New London Springfield Water New London |
3,250 | 0 | 8.2 mi | |
| Hill Water Works Hill |
600 | 0 | 9.3 mi | |
| Chalk Pond Water Newbury |
208 | 0 | 12.6 mi | |
| Franklin Water Works Franklin |
7,200 | 0 | 12.8 mi | |
| Newbury Elderly Housing Newbury |
51 | 2 | 15.1 mi | |
| Tilton Northfield Water Dist Northfield |
2,500 | 0 | 15.9 mi | |
| Warner Village Water Dist Warner |
660 | 0 | 16.1 mi | |
| Fisherfield Townhouses Bradford |
40 | 0 | 16.8 mi | |
| Highlands Village District Northfield |
95 | 0 | 18.3 mi | |
| Cross Mill Village Northfield |
28 | 0 | 18.3 mi | |
| Pillsbury Lake/peninsula Webster |
90 | 0 | 18.4 mi | |
| Penacook Boscawen Water Pct Boscawen |
3,800 | 0 | 18.6 mi | |
| Pillsbury Lake/franklin Pierce Webster |
75 | 2 | 19.0 mi | |
| Soda Brook Northfield |
64 | 2 | 19.4 mi | |
| Pleasant Pond Coop and Cmpgrnd Warner |
218 | 0 | 19.6 mi | |
| The Meadows Hopkinton |
200 | 0 | 20.5 mi | |
| Canterbury Spruces Housing Canterbury |
25 | 0 | 20.6 mi | |
| Deer Meadows Hopkinton |
150 | 2 | 20.6 mi | |
| Contoocook Village Pct Hopkinton |
1,600 | 3 | 20.7 mi | |
| Canterbury Crossings Northfield |
35 | 0 | 21.3 mi | |
| Cogswell Springs Water Works Henniker |
3,000 | 0 | 23.0 mi | |
| Liberty Ridge MHP Henniker |
91 | 0 | 23.1 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.