Water quality for ZIP code 03878
ZIP 03878 covers Somersworth in Strafford County, New Hampshire, one of 16 ZIP codes in the county. 132 active public water systems serve the county; 45 had an EPA violation in the past three years.
Most likely your provider
Your location is within the outer bounds of this system's EPA service area.
Other community water systems in Strafford County
47 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Rochester Consecutive Wtr Sys Rochester |
171 | 0 | 2.0 mi | |
| Profile Apartments Rochester |
90 | 4 | 2.0 mi | |
| Country Ridge Mobile Home Park Rochester |
35 | 2 | 2.4 mi | |
| Rollinsford Water Sewer Dist Rollinsford |
1,688 | 1 | 3.5 mi | |
| Dover Water Dept Dover |
29,000 | 0 | 4.6 mi | |
| Green Hills MHP Barrington |
50 | 0 | 5.1 mi | |
| Rochester Water Dept Rochester |
25,000 | 1 | 5.3 mi | |
| Halcyon Hill Barrington |
58 | 0 | 6.4 mi | |
| Madbury Woods Apartments Madbury |
30 | 4 | 6.6 mi | |
| Drew Pond Barrington |
100 | 0 | 6.7 mi | |
| Inn at Secretariat Estates Rochester |
54 | 0 | 7.0 mi | |
| Johnson Creek Durham |
63 | 0 | 7.9 mi | |
| Crossings at Village Ctr Barrington |
60 | 0 | 8.0 mi | |
| Barrington Hills Apts/lower Barrington |
38 | 0 | 8.1 mi | |
| Barrington Hills Apts/upper Barrington |
43 | 0 | 8.1 mi | |
| Lee Oak Cooperative Barrington |
163 | 0 | 8.2 mi | |
| Heath Brook Estates Rochester |
36 | 1 | 8.3 mi | |
| Unh/durham Water Sys Durham |
16,000 | 0 | 8.3 mi | |
| Meadowbrook Village Rochester |
40 | 1 | 8.3 mi | |
| Cedar Wood Estates Lee |
30 | 0 | 8.8 mi | |
| Acorn Terrace Rochester |
215 | 0 | 8.9 mi | |
| Grandview Estates Rochester |
30 | 0 | 8.9 mi | |
| Swains Lake Village Water Barrington |
227 | 1 | 9.0 mi | |
| Oyster River Condos Lee |
53 | 1 | 9.1 mi | |
| Brookdale Spruce Wood Durham |
225 | 0 | 9.6 mi |
Non-community systems in Strafford County (84: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Strafford 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.