COUNTY WATER-SYSTEM LEDGER
Frederick, Maryland
EPA’s September 2026 export lists 9 active community water systems serving Frederick, 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 Frederick, Maryland
EPA associates 9 covered systems with Frederick, Maryland; their reported population-served values total 168,582 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 |
|---|---|---|---|
| New Design - Frederick CountyMD0100030 | 74,911 | Surface water | No current violation flagged |
| City Of FrederickMD0100015 | 54,000 | Surface water | No current violation flagged |
| Town Of WalkersvilleMD0100025 | 8,440 | Groundwater under influence of surface water | No current violation flagged |
| Fort DetrickMD0100011 | 7,900 | Surface water | No current violation flagged |
| City Of BrunswickMD0100005 | 7,312 | Surface water | No current violation flagged |
| Town Of ThurmontMD0100023 | 6,200 | Groundwater under influence of surface water | No current violation flagged |
| Town Of MiddletownMD0100018 | 4,288 | Ground water | No current violation flagged |
| Town Of EmmitsburgMD0100010 | 2,921 | Surface water | No current violation flagged |
| Fountaindale SouthMD0100013 | 2,610 | Groundwater under influence of surface water | No current violation flagged |
02 / SOURCE MIX
Primary water sources for Frederick, Maryland
EPA classifies 9 systems serving Frederick, Maryland across 3 primary-source categories; Surface 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.