Public water system record
Derry Water Dept
Serves Derry, Rockingham County, NH · 17,290 people served
Federal records show no health-based violations and no monitoring or reporting issues for Derry Water Dept in the last ten years.
System profile
- Health-based violations, last 10 years
- 0
- Resolved
- 0
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 0
Key facts
- Derry Water Dept buys its water from Manchester Water Works.
- Record on file since 1998, with 3 health-based violations before October 19, 2016.
Check whether Derry Water Dept serves your address
Health-based violations
Since October 2016Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.
None since October 2016, and no monitoring or reporting violations either.
Full record since 1998
EPA's records for Derry Water Dept go back to 1998. Before October 19, 2016 they list 3 health-based violations (3 resolved) and no monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 2 | 0 |
| 2000s | 1 | 0 |
Most recent health-based violation before October 19, 2016: Total Coliform, began August 2004, Resolved.
Show all 3 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 2004 | Resolved |
|
Total Coliform (acute)
Contaminant limit exceeded
|
Sep 1, 1998 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jun 1, 1998 | Resolved |
Where the water comes from
Derry Water Dept buys its water from Manchester Water Works. It lists no wells or intakes of its own. 5 other community water systems buy water from Derry Water Dept.
Buys water from
- Manchester Water Works Manchester, NH
Community systems that buy water from it
- Drew Woods Nashua, NH
- Londonderry Nashua, NH
- Maple Hill Acres Nashua, NH
- Oakwood Terrace Nashua, NH
- Salem Water Dept Salem, NH
Annual water quality report
Derry Water Dept must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.
Systems serving 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.
Find a posted report with EPA's Consumer Confidence Report search
Testing your own water
To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by New Hampshire.
Certified drinking water labs by state EPA guidance for private wells