COUNTY WATER-SYSTEM LEDGER
St. Mary's, Maryland
EPA’s September 2026 export lists 5 active community water systems serving St. Mary's, Maryland, with 0 current-violation flags and 0 serious-violator flags among the covered systems.
Source: EPA SDWIS system-search export · Active community systems serving 2,500+ people · Snapshot 13 Sep 2026
01 / SYSTEMS
Water systems serving St. Mary's, Maryland
EPA associates 5 covered systems with St. Mary's, Maryland; their reported population-served values total 75,774 and may overlap.
Ordered by reported population served. Open any record for separate health, monitoring, notice, other, and serious-violator flags.
| Water system | Population served | Primary source | Current export status |
|---|---|---|---|
| Lexington ParkMD0180007 | 43,030 | Ground water | No current violation flagged |
| Patuxent Naval Air Station (Navfac-Wash)MD0180022 | 22,000 | Ground water | No current violation flagged |
| Town Of LeonardtownMD0180006 | 5,000 | Ground water | No current violation flagged |
| Country LakesMD0180023 | 3,016 | Ground water | No current violation flagged |
| Cedar CoveMD0180002 | 2,728 | Ground water | No current violation flagged |
02 / SOURCE MIX
Primary water sources for St. Mary's, Maryland
EPA classifies 5 systems serving St. Mary's, Maryland across 1 primary-source categories; Ground water is the largest category with 5 systems.
It is the sum of each listed system's reported population served, not a census estimate. Service areas can overlap and some systems list multiple cities or counties.