TOWN OF LEONARDTOWN
PWS ID: MD0180006 · LEONARDTOWN, Maryland 20650
Population Served
5,000
Total Violations
38
Health-Based Violations
2
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 1,670
- County
- St. Mary's
- School/Daycare
- No
- MCL Violations
- 2
- Monitoring Violations
- 29
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 10 | 2010 |
| Total Haloacetic Acids (HAA5) | MR | 6 | 2024 |
| TTHM | MR | 6 | 2024 |
| Consumer Confidence Rule | Other | 4 | 2010 |
| Lead and Copper Rule | MR | 3 | 2020 |
| Nitrate | MR | 2 | 2019 |
| Arsenic | MR | 2 | 2005 |
| Revised Total Coliform Rule | MCL | 2 | 2016 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.