Public water system record
Cornerstone Place
Serves an area of Rockingham County, NH · 25 people served
Federal records show 1 health-based violation and no monitoring/reporting issues for Cornerstone Place in the last ten years. The most serious issue in this window was a Combined Uranium violation that EPA lists as archived, not resolved.
System profile
- Health-based violations, last 10 years
- 1
- Resolved
- 0
- Unresolved
- 0
- Archived by EPA
- 1
- Any acute record
- No
- Monitoring issues, last 10 years
- 0
Key facts
- Cornerstone Place draws water from 1 well.
- Highest measured level in the last 10 years: Combined Uranium, 49 µg/L, federal limit 30 µg/L (1.6 times the limit), 2025.
- Record on file since 1992, with 7 health-based violations before October 19, 2016.
Check whether Cornerstone Place 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.
| Contaminant | Rule family | Start date | Status | Acute |
|---|---|---|---|---|
|
Combined Uranium
Contaminant limit exceeded
Measured 49 µg/L, federal limit 30 µg/L (1.6 times the limit)
|
340 | Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
Full record since 1992
EPA's records for Cornerstone Place go back to 1992. Before October 19, 2016 they list 7 health-based violations (6 resolved, 1 archived by EPA without a recorded fix) and 47 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 4 | 22 |
| 2000s | 0 | 21 |
| 2010 to October 18, 2016 | 3 | 4 |
| 2020s | 1 | 0 |
Most recent health-based violation before October 19, 2016: Groundwater Rule, began January 2016, Resolved.
Show all 7 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Groundwater Rule
Treatment technique failure
|
Jan 10, 2016 | Resolved |
|
Groundwater Rule
Treatment technique failure
|
Nov 13, 2015 | Resolved |
|
Groundwater Rule
Treatment technique failure
|
Oct 26, 2014 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Nov 1, 1994 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Sep 1, 1992 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Mar 1, 1992 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Feb 1, 1992 | Resolved |
What the violations mean
Combined Uranium
1 incidentTest results for Combined Uranium were above the federal limit (a maximum contaminant level violation).
The utility had to notify customers about this violation.
Where the water comes from
Cornerstone Place draws water from 1 well.
Annual water quality report
Cornerstone Place 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 500 or fewer people may meet the rule by telling customers the report is available on request, so you may need to ask Cornerstone Place for a copy.
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