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

COUNTY WATER-SYSTEM LEDGER

Frederick, Maryland

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

Systems9active CWS · pop. 2,500+
Population served168,582reported total; may overlap
Current violation flag0.0%0 systems
Serious-violator flag0.0%0 systems

01 / SYSTEMS

Water systems serving Frederick

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

Water systemPopulation servedPrimary sourceCurrent export status
New Design - Frederick CountyMD010003074,911Surface waterNo current violation flagged
City Of FrederickMD010001554,000Surface waterNo current violation flagged
Town Of WalkersvilleMD01000258,440Groundwater under influence of surface waterNo current violation flagged
Fort DetrickMD01000117,900Surface waterNo current violation flagged
City Of BrunswickMD01000057,312Surface waterNo current violation flagged
Town Of ThurmontMD01000236,200Groundwater under influence of surface waterNo current violation flagged
Town Of MiddletownMD01000184,288Ground waterNo current violation flagged
Town Of EmmitsburgMD01000102,921Surface waterNo current violation flagged
Fountaindale SouthMD01000132,610Groundwater under influence of surface waterNo current violation flagged

02 / SOURCE MIX

Surface water5 systems · 147,044 served
Groundwater under influence of surface water3 systems · 17,250 served
Ground water1 systems · 4,288 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.