City and town drinking water records
Water systems serving Derry, NH
8 community water systems have a mapped service area in Derry, NH. Derry Water Dept covers 32% of the area inside Derry's Census boundary and reports serving 17,290 people in all.
None of them had a health-based violation in the last 10 years.
5 rely mainly on groundwater and 3 on surface water, counting water bought from other systems.
2 systems filed a lead service line inventory listing 0 lead lines, 14 galvanized lines that must be replaced and 3,081 lines of unknown material.
- Community water systems
- 8
- Systems with a health-based violation, last 10 years
- 0
- Systems with one unresolved
- 0
- Lead service lines in inventories
- 0
Water systems serving Derry
8 systemsPeople served is each system's own figure for its whole service area. Violation counts cover the last 10 years of EPA records.
| System | Area | People served | Main source | Health-based violations, 10 years | Unresolved | Lead lines |
|---|---|---|---|---|---|---|
| Derry Water Dept | Covers 32% of Derry | 17,290 | Purchased surface water | 0 | 0 | No inventory |
| Drew Woods | Covers 6% of Derry | 1,408 | Purchased surface water | 0 | 0 | No inventory |
| Maple Hill Acres | Mapped area inside Derry | 523 | Purchased surface water | 0 | 0 | No inventory |
| Glen Ridge Dev | Mapped area inside Derry | 253 | Groundwater | 0 | 0 | No inventory |
| Maple Haven | Mapped area inside Derry | 250 | Groundwater | 0 | 0 | No inventory |
| Morningside Drive | Mapped area inside Derry | 80 | Groundwater | 0 | 0 | No inventory |
| Farmstead Acres | Mapped area inside Derry | 90 | Groundwater | 0 | 0 | No inventory |
| Autumn Woods | Mapped area inside Derry | 73 | Groundwater | 0 | 0 | No inventory |
Other cities and towns in Rockingham County
10 placesCounties come from the counties EPA lists each system serving, matched to 2024 Census counties; where EPA lists none, from the county coded in the system's ID, its service area map, or its mailing address. A county holding at least a fifth of a system's service area map is added when at least a fifth of that map lies in those counties. Towns are the ones EPA lists and the Census places such a map covers, always inside those counties. In New England, where EPA's town names a whole Town, it is not matched to the village of the same name. A system is not listed in a county holding less than a fifth of its map, or in a county or town its map reaches when the map lies mostly outside the counties EPA lists, so a page can leave out a system that serves part of the area. Methodology and limitations