THE CALVERTON SCHOOL
PWS ID: MD1040022 · HUNTINGTOWN, Maryland 20639
Population Served
461
Total Violations
50
Health-Based Violations
9
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 1
- County
- Calvert
- School/Daycare
- Yes
- MCL Violations
- 8
- Monitoring Violations
- 37
- Treatment Tech Violations
- 1
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 8 | 2007 |
| Arsenic | MR | 7 | 2010 |
| Coliform (TCR) | MR | 7 | 2011 |
| Lead and Copper Rule | MR | 3 | 1998 |
| Thallium, Total | MR | 2 | 2000 |
| Selenium | MR | 2 | 2000 |
| Nitrate | MR | 2 | 2024 |
| Barium | MR | 2 | 2000 |
| Cadmium | MR | 2 | 2000 |
| Chromium | MR | 2 | 2000 |
| Mercury | MR | 2 | 2000 |
| Nickel | MR | 2 | 2000 |
| Antimony, Total | MR | 2 | 2000 |
| Beryllium, Total | MR | 2 | 2000 |
| LEAD AND COPPER RULE REVISIONS | RPT | 1 | 2024 |
| Consumer Confidence Rule | Other | 1 | 2025 |
| LEAD AND COPPER RULE REVISIONS | TT | 1 | 2024 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.