Water quality in Londonderry, New Hampshire
Londonderry is in Rockingham 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 |
|---|---|---|---|---|
| Southview Condos Londonderry |
38 | 0 | 1.2 mi | |
| Hanafin Farm Londonderry |
105 | 0 | 1.2 mi | |
| Rolling Meadows Condos IV Londonderry |
42 | 0 | 1.6 mi | |
| Rolling Meadows Condos III Londonderry |
50 | 0 | 1.6 mi | |
| Rolling Meadows Condos I Londonderry |
88 | 0 | 1.7 mi | |
| Bitim Apartments Londonderry |
28 | 1 | 1.9 mi | |
| Ponderosa MHP Londonderry |
110 | 1 | 2.0 mi | |
| Avery Estates Londonderry |
383 | 0 | 2.0 mi | |
| Olde Country Village Londonderry |
130 | 0 | 2.1 mi | |
| Harvest Village Londonderry |
185 | 0 | 2.2 mi | |
| Pinehaven Water Trust Londonderry |
95 | 0 | 2.2 mi | |
| Boumil Grove Condos Londonderry |
72 | 1 | 2.3 mi | |
| Ministerial/parrish Hills Londonderry |
305 | 0 | 2.4 mi | |
| Oakwood Terrace Derry |
310 | 0 | 2.9 mi | |
| Oakridge Condos Londonderry |
250 | 0 | 3.2 mi | |
| Springwood Hills Londonderry |
228 | 0 | 3.2 mi | |
| Brook Park Ests Londonderry |
880 | 0 | 3.5 mi | |
| Derry Water Dept Derry |
17,528 | 0 | 3.8 mi | |
| Willow Bend Derry |
55 | 0 | 4.0 mi | |
| Maple Hill Acres Derry |
500 | 0 | 4.2 mi | |
| Running Brook Derry |
47 | 0 | 4.5 mi | |
| Whispering Winds Windham |
488 | 0 | 4.6 mi | |
| Wynridge Condos Windham |
87 | 1 | 4.7 mi | |
| Old Coach Village Derry |
50 | 0 | 4.8 mi | |
| Hardwood Hts Birch Hill Windham |
120 | 0 | 5.0 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, nearest to Londonderry 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.
Town locations and ZIP code areas come from U.S. Census Bureau 2020 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.