EPA EXPORT · 13 SEP 2026FEDERAL COMPLIANCE RECORDS · NOT A HOME WATER TEST
TAP WATERLEDGERPublic system compliance records

COUNTY WATER-SYSTEM LEDGER

St. Mary's, Maryland

Compare active community water systems serving this county in EPA's public export. Systems can serve multiple places, so population totals may overlap.

Systems5active CWS · pop. 2,500+
Population served75,774reported total; may overlap
Current violation flag0.0%0 systems
Serious-violator flag0.0%0 systems

01 / SYSTEMS

Water systems serving St. Mary's

Ordered by reported population served. Open any record for separate health, monitoring, notice, other, and serious-violator flags.

Water systemPopulation servedPrimary sourceCurrent export status
Lexington ParkMD018000743,030Ground waterNo current violation flagged
Patuxent Naval Air Station (Navfac-Wash)MD018002222,000Ground waterNo current violation flagged
Town Of LeonardtownMD01800065,000Ground waterNo current violation flagged
Country LakesMD01800233,016Ground waterNo current violation flagged
Cedar CoveMD01800022,728Ground waterNo current violation flagged

02 / SOURCE MIX

Ground water5 systems · 75,774 served
How to read the population total

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.