Water quality for ZIP code 03857
ZIP 03857 covers Newmarket in Rockingham County, New Hampshire, one of 36 ZIP codes in the county. 554 active public water systems serve the county; 154 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 Rockingham County
198 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Wade Farm Condos Newmarket |
40 | 0 | 1.5 mi | |
| Great Bay Water System Newmarket |
228 | 0 | 2.3 mi | |
| Newfields Vlg Water and Sewer Newfields |
550 | 0 | 2.4 mi | |
| Salt River Condos Stratham |
195 | 0 | 2.9 mi | |
| Glengarry Condos Stratham |
171 | 0 | 2.9 mi | |
| Chisholm Farm Stratham |
168 | 0 | 3.1 mi | |
| Stratham Green Condos Stratham |
150 | 0 | 3.3 mi | |
| Peninsula at Winding Brook Stratham |
128 | 0 | 3.4 mi | |
| Jewett Hill Stratham |
55 | 0 | 3.5 mi | |
| Stratham Woods Stratham |
38 | 3 | 3.7 mi | |
| Forest Ridge Exeter |
140 | 0 | 3.8 mi | |
| Exeter Highlands Exeter |
50 | 0 | 4.4 mi | |
| Pheasant Run Condos Stratham |
70 | 0 | 4.4 mi | |
| Beech Tree Cooperative Exeter |
70 | 0 | 4.5 mi | |
| Aberdeen/west Stratham |
46 | 1 | 4.7 mi | |
| Burnhaven Stratham |
150 | 0 | 4.8 mi | |
| Muirfield Cluster Stratham |
69 | 0 | 4.9 mi | |
| Lamington Hill Stratham |
35 | 5 | 5.0 mi | |
| Melling Glen Epping |
105 | 0 | 5.1 mi | |
| Balmoral Condos Stratham |
105 | 0 | 5.2 mi | |
| Woodlands Epping |
203 | 0 | 5.3 mi | |
| Evans Trailer Park Epping |
47 | 0 | 5.6 mi | |
| Governors Green Epping |
53 | 0 | 5.8 mi | |
| Louisburg Circle Exeter |
55 | 0 | 6.2 mi | |
| Montrose Condos Stratham |
210 | 0 | 6.2 mi |
Non-community systems in Rockingham County (355: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Rockingham 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.