Frederick County, MD
The federal environmental record for Frederick County (population 293,391): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
1
Superfund NPL sites
4
federal cleanup sites
6
PFAS-detecting water systems
8
TRI facilities
5
open tank releases
Superfund NPL sites
| Site | City | Status | Listed |
|---|---|---|---|
| Fort Detrick Area B Ground Water | Fort Detrick | on the NPL | 04/09/2009 |
Drinking water: PFAS testing
Public water systems serving Frederick with at least one PFAS detection under UCMR5. The federal limit for PFOA and PFOS is 4 ng/L; EPA proposed in May 2026 to rescind the limits for the other compounds, which are shown for information.
| System | Highest results | Reading |
|---|---|---|
| TOWN OF MIDDLETOWN MD0100018 | PFPeA: 9.2 ng/L PFOS: 6.7 ng/L PFHxA: 6.2 ng/L | above final limit |
| TOWN OF THURMONT MD0100023 | PFOS: 48 ng/L PFOA: 15 ng/L PFHxS: 5.3 ng/L | above final limit |
| NEW LIFE CHRISTIAN SCHOOL MD1100052 | PFPeA: 24 ng/L PFHxA: 15.4 ng/L PFOS: 15.3 ng/L | above final limit |
| FORT DETRICK MD0100011 | PFPeA: 3.9 ng/L | detected |
| CITY OF FREDERICK MD0100015 | PFPeA: 3.1 ng/L | detected |
| NEW DESIGN - FREDERICK COUNTY MD0100030 | PFPeA: 3.3 ng/L | detected |
On a system with detections? Testing and treatment options
Facilities reporting toxic releases (2024)
8 facilities in Frederick filed TRI reports for 2024, totalling 0 lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| GLEN-GERY CORP - ROCKY RIDGE PLANT | ROCKY RIDGE | - | 0 lb |
| GRIFFITH ENERGY SERVICES INC FREDERICK BULK PLANT | FREDERICK | - | 0 lb |
| RINKER MATERIALS HYDRO CONDUIT | FREDERICK | Lead | 0 lb |
| SAPUTO CHEESE USA INC | FREDERICK | - | 0 lb |
| OLDCASTLE LAWN & GARDEN | FREDERICK | - | 0 lb |
| SCHUSTER CONCRETE READY MIX LLC-SOUTH ST | FREDERICK | Lead | 0 lb |
| MCCORMICK PAINT WORKS CO | FREDERICK | - | 0 lb |
| AMERICAN COMPUTER DEVELOPMENT INC (DBA ACDI) | FREDERICK | - | 0 lb |
Underground fuel tanks
EPA's UST Finder records 525 tank facilities in Frederick: 305 tanks in service and 1,509 closed. 306 fuel releases are on record, of which 5 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Frederick as Zone 1, the highest predicted indoor radon levels (over 4 pCi/L average). Radon and air quality are covered in depth on lung.com.
The record for one specific address
County figures blur what matters: distance. The Address Environmental Report runs these same federal datasets against one address and reports every site, tank, polluter and water result around it, with distances, in about a minute.
Get the report - $39All federal cleanup sites on file
The wider Superfund enterprise inventory (SEMS) for Frederick, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- FORT DETRICK AREA AFREDERICK
- U.S. NATIONAL CANCER INSTITUTE RESEARCH & DEVELOPMENT CENTERFREDERICK
- US ARMY FORT DETRICKFREDERICK
- USN NAVAL SUPPORT FACILITYTHURMONT