LONDONDERRY
New Hampshire — Community Water System — PWSID: NH1391010
System Information
| PWSID | NH1391010 |
| System Name | LONDONDERRY |
| System Type | Community Water System |
| Water Source | Surface Water Purchased |
| Activity Status | Active |
| Owner Type | Private |
| EPA Region | 01 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Sep 15, 1989 |
| Last Reported | Dec 15, 2025 |
Location & Contact
| State | New Hampshire |
| City | NASHUA |
| ZIP Code | 03064 |
| Address | PO BOX 428 |
| Organization | PENNICHUCK WATER WORKS INC |
| Phone | — |
Population & Service
| Population Served | 5,380 |
| Service Connections | 1,786 |
Drinking Water Violations (6)
This water system has 6 violations recorded in the EPA SDWIS database.
| Begin Date | End Date | Contaminant | Category | Health-Based | Major | Measured | Federal MCL | State MCL | Status | Return to Compliance | Rule |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Oct 1, 2013 | Jan 1, 2014 | TTHM | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Jan 1, 2014 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Oct 1, 2013 | Jan 1, 2014 | TTHM | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Jan 1, 2014 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Oct 1, 2013 | Jan 1, 2014 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Jan 1, 2014 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Oct 1, 2013 | Jan 1, 2014 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Jan 1, 2014 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Oct 1, 2013 | Jan 1, 2014 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Jan 1, 2014 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Oct 1, 2013 | Jan 1, 2014 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Jan 1, 2014 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
About This Water System
Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.