Prospect Mountain High Sch
PWSID: NH0065020
This system has no unresolved violations. The most recent violation on record was 2024-07-01.
This system has more violations on record than 80% of water systems in New Hampshire.
Violation trend: 2.2 per year over the last 5 years.
System Details
| Population Served | 500 |
| Service Connections | 1 |
| Water Source | Groundwater |
| System Type | Non-Transient Non-Community |
| Owner | Local Government |
| Status | Active |
| City | Alton |
| EPA ZIP on File | 03809 |
| Note | School or Daycare |
Areas Served
- Alton, Belknap County
Violation History (11 total)
| Contaminant | Violation | Date | Health-Based | Status |
|---|---|---|---|---|
| 1005 | MCL Measured: 0.0110 MG/L (EPA limit: 0.010 mg/L) | 2024-07-01 | Yes | Returned to Compliance |
| 1005 | MCL Measured: 0.0110 MG/L (EPA limit: 0.010 mg/L) | 2024-07-01 | Yes | Acknowledged |
| 1005 | MCL Measured: 0.0110 MG/L (EPA limit: 0.010 mg/L) | 2024-07-01 | Yes | Returned to Compliance |
| 1005 | MCL Measured: 0.0169 MG/L (EPA limit: 0.010 mg/L) | 2024-04-01 | Yes | Returned to Compliance |
| 1005 | MCL Measured: 0.0169 MG/L (EPA limit: 0.010 mg/L) | 2024-04-01 | Yes | Acknowledged |
| 1005 | MCL Measured: 0.0207 MG/L (EPA limit: 0.010 mg/L) | 2024-01-01 | Yes | Returned to Compliance |
| 1005 | MCL Measured: 0.0207 MG/L (EPA limit: 0.010 mg/L) | 2024-01-01 | Yes | Acknowledged |
| 1005 | MCL Measured: 0.0207 MG/L (EPA limit: 0.010 mg/L) | 2024-01-01 | Yes | Acknowledged |
| 1005 | MCL Measured: 0.0161 MG/L (EPA limit: 0.010 mg/L) | 2023-10-01 | Yes | Acknowledged |
| 1005 | MCL Measured: 0.0161 MG/L (EPA limit: 0.010 mg/L) | 2023-10-01 | Yes | Returned to Compliance |
| 1005 | MCL Measured: 0.0161 MG/L (EPA limit: 0.010 mg/L) | 2023-10-01 | Yes | Acknowledged |
Understanding This Water System's Record
Prospect Mountain High Sch is a non-transient non-community water system that draws from groundwater sources and serves a population of 500 in Alton, New Hampshire. This page shows its complete compliance history as reported to the EPA's Safe Drinking Water Information System (SDWIS), the federal database that tracks every public water system in the United States.
What Do These Violations Mean?
Health-based violations mean the system exceeded an EPA maximum contaminant level (MCL) or failed to provide required treatment. These indicate potential health risks from contaminants like lead, arsenic, bacteria, nitrates, or disinfection byproducts. Non-health-based violations involve monitoring, reporting, or procedural requirements — the system missed a testing deadline or failed to notify customers, but contaminant levels were not necessarily unsafe.
What Should You Do?
Your water utility is required to publish an annual Consumer Confidence Report (CCR) that details test results and any violations. If your system has active health-based violations, consider a certified water filter rated for the specific contaminants involved. The contaminant guides on this site explain health risks and filter options for common pollutants. For the most current results, contact your water utility directly — EPA data can lag weeks or months behind real-time testing.