TOWN OF LEONARDTOWN
Maryland — Community Water System — PWSID: MD0180006
System Information
| PWSID | MD0180006 |
| System Name | TOWN OF LEONARDTOWN |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 03 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Jan 21, 1982 |
| Last Reported | Feb 26, 2026 |
Location & Contact
| State | Maryland |
| City | LEONARDTOWN |
| ZIP Code | 20650 |
| Address | LEONARDTOWN COMMISSIONERS |
| Organization | MCKAY, LASCHELLE |
| Phone | 301-475-9791 |
Population & Service
| Population Served | 5,000 |
| Service Connections | 1,670 |
Drinking Water Violations (38)
This water system has 38 violations recorded in the EPA SDWIS database.
| Begin Date | End Date | Contaminant | Category | Health-Based | Major | Measured | Federal MCL | State MCL | Status | Return to Compliance | Rule |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan 1, 2024 | Dec 31, 2024 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2024 | — | |
| Jan 1, 2024 | Dec 31, 2024 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2024 | — | |
| Jan 1, 2024 | Dec 31, 2024 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2024 | — | |
| Jan 1, 2024 | Dec 31, 2024 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2024 | — | |
| Jan 1, 2024 | Dec 31, 2024 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2024 | — | |
| Jan 1, 2024 | Dec 31, 2024 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2024 | — | |
| Oct 1, 2020 | — | MR | No | No | — | TT | — | Resolved | Oct 19, 2020 | — | |
| Jan 1, 2019 | Dec 31, 2019 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2019 | — | |
| Jan 1, 2019 | Dec 31, 2019 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2019 | — | |
| Oct 1, 2017 | — | MR | No | No | — | TT | — | Resolved | Jan 2, 2018 | — | |
| Jun 1, 2016 | Jun 30, 2016 | MCL | Yes | No | — | — | — | Resolved | Jun 30, 2016 | — | |
| Jun 1, 2016 | Jun 30, 2016 | MCL | Yes | No | — | — | — | Resolved | Jun 30, 2016 | — | |
| Oct 1, 2011 | — | MR | No | No | — | TT | — | Resolved | Mar 5, 2012 | — | |
| Sep 1, 2010 | Sep 30, 2010 | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 2010 | — | |
| Sep 1, 2010 | Sep 30, 2010 | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 2010 | — | |
| Sep 1, 2010 | Sep 30, 2010 | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 2010 | — | |
| Sep 1, 2010 | Sep 30, 2010 | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 2010 | — | |
| Jul 1, 2010 | — | Other | No | No | — | — | — | Resolved | Jul 23, 2010 | — | |
| Jan 1, 2010 | Jan 31, 2010 | MR | No | No | — | 5% of samples | — | Resolved | Jan 31, 2010 | — | |
| Jan 1, 2010 | Jan 31, 2010 | MR | No | No | — | 5% of samples | — | Resolved | Jan 31, 2010 | — | |
| Jan 1, 2010 | Jan 31, 2010 | MR | No | No | — | 5% of samples | — | Resolved | Jan 31, 2010 | — | |
| Jan 1, 2010 | Dec 31, 2010 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2010 | — | |
| Jan 1, 2010 | Dec 31, 2010 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2010 | — | |
| Jan 1, 2010 | Dec 31, 2010 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2010 | — | |
| Jan 1, 2010 | Dec 31, 2010 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2010 | — | |
| Jan 1, 2010 | Dec 31, 2010 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2010 | — | |
| Jan 1, 2010 | Dec 31, 2010 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2010 | — | |
| Apr 1, 2008 | Apr 30, 2008 | MR | No | No | — | 5% of samples | — | Resolved | Apr 30, 2008 | — | |
| Apr 1, 2008 | Apr 30, 2008 | MR | No | No | — | 5% of samples | — | Resolved | Apr 30, 2008 | — | |
| Apr 1, 2008 | Apr 30, 2008 | MR | No | No | — | 5% of samples | — | Resolved | Apr 30, 2008 | — | |
| Jul 1, 2005 | Sep 30, 2005 | MR | No | Yes | — | 0.010 mg/L | — | Resolved | Sep 30, 2005 | — | |
| Jul 1, 2005 | Sep 30, 2005 | MR | No | Yes | — | 0.010 mg/L | — | Resolved | Sep 30, 2005 | — | |
| Jul 1, 2003 | — | Other | No | No | — | — | — | Resolved | Aug 11, 2003 | — | |
| Jul 1, 2003 | — | Other | No | No | — | — | — | Resolved | Aug 11, 2003 | — | |
| Jul 1, 2001 | — | Other | No | No | — | — | — | Resolved | Jul 24, 2007 | — | |
| — | — | — | No | No | — | — | — | — | — | — | |
| — | — | — | No | No | — | — | — | — | — | — | |
| — | — | — | No | No | — | — | — | — | — | — |
About This Water System
Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.