Water quality for ZIP code 03304
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 |
|---|---|---|---|---|
| White Rock Senior Living Bow |
120 | 0 | 1.5 mi | |
| Abenaki Water/white Rock Water Bow |
238 | 0 | 1.5 mi | |
| Cottages at Windchimes Bow |
75 | 0 | 2.0 mi | |
| Bow Municipal Water System Bow |
150 | 0 | 2.7 mi | |
| Wesco Utilities Hooksett |
210 | 0 | 3.4 mi | |
| Meeting House Water Pembroke |
35 | 1 | 3.5 mi | |
| Bella Brook Water Bow |
50 | 0 | 3.7 mi | |
| Evergreen Drive Water Bow |
80 | 0 | 4.4 mi | |
| Pembroke Water Works Pembroke |
5,200 | 0 | 4.4 mi | |
| Hooksett Village Water Pct Hooksett |
3,000 | 0 | 4.9 mi | |
| Bear View Crossing Allenstown |
800 | 0 | 5.5 mi | |
| Borough RD Apartments Pembroke |
30 | 0 | 5.8 mi | |
| Concord Water Dept Concord |
44,215 | 0 | 6.2 mi | |
| Catamount Hill Allenstown |
383 | 1 | 6.9 mi | |
| Central Hooksett Water Pct Hooksett |
4,650 | 0 | 7.2 mi | |
| Hopkinton Village Pct Hopkinton |
215 | 1 | 7.9 mi | |
| Kings Grant Epsom |
99 | 3 | 8.0 mi | |
| Olde Towne Allenstown |
243 | 0 | 8.5 mi | |
| Sheltering Pines MHP Epsom |
125 | 2 | 8.7 mi | |
| Kings Towne MHP Epsom |
350 | 0 | 8.9 mi | |
| Meadow Brook Epsom |
75 | 0 | 9.1 mi | |
| Smythe Woods Hooksett |
168 | 0 | 9.5 mi | |
| Freedom Hill/pine Ridge Est Loudon |
370 | 3 | 9.5 mi | |
| Robinsons Mhp/upper Chichester |
55 | 0 | 9.8 mi | |
| Elm Brook Village Hopkinton |
90 | 0 | 10.1 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.