Carroll County, MD
The federal environmental record for Carroll County (population 176,639): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
0
Superfund NPL sites
3
federal cleanup sites
6
PFAS-detecting water systems
8
TRI facilities
3
open tank releases
Drinking water: PFAS testing
Public water systems serving Carroll 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 HAMPSTEAD MD0060003 | PFPeA: 17.3 ng/L PFHxA: 14.9 ng/L PFBS: 13.4 ng/L | above final limit |
| TOWN OF MANCHESTER MD0060006 | PFBS: 16.8 ng/L PFBA: 5.7 ng/L PFOA: 4.7 ng/L | above final limit |
| TOWN OF MOUNT AIRY MD0060007 | PFPeA: 22.7 ng/L PFHxA: 18.4 ng/L PFOA: 12.7 ng/L | above final limit |
| CITY OF TANEYTOWN MD0060012 | PFBS: 15.1 ng/L PFOS: 10.7 ng/L PFPeA: 5.6 ng/L | above final limit |
| CITY OF WESTMINSTER, MD MD0060015 | PFPeA: 66.7 ng/L PFHxA: 24.6 ng/L PFBA: 20.1 ng/L | above final limit |
| FREEDOM DISTRICT MD0060002 | PFPeA: 3.4 ng/L PFHxA: 3.1 ng/L | detected |
On a system with detections? Testing and treatment options
Facilities reporting toxic releases (2024)
8 facilities in Carroll filed TRI reports for 2024, totalling 10k lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| HEIDELBERG MATERIALS US CEMENT LLC | UNION BRIDGE | Hydrogen sulfide, Ammonia | 10k lb |
| EVAPCO INC-TANEYTOWN | TANEYTOWN | Chromium, Nickel | 75 lb |
| BLACK & DECKER (US) INC | HAMPSTEAD | Methanol, Nickel | 52 lb |
| GRIFFITH ENERGY SERVICES INC BARE | WESTMINSTER | - | 0 lb |
| GRIFFITH ENERGY SERVICES INC SPRING MILL | WESTMINSTER | - | 0 lb |
| MARYLAND PAVING INC | FINKSBURG | Polycyclic aromatic compounds | 0 lb |
| FLOWSERVE FSG | TANEYTOWN | - | 0 lb |
| FUCHS N.A. | HAMPSTEAD | - | 0 lb |
Underground fuel tanks
EPA's UST Finder records 460 tank facilities in Carroll: 191 tanks in service and 1,341 closed. 233 fuel releases are on record, of which 3 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Carroll 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 Carroll, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- AVENUE CLEANERSWESTMINSTER
- BLACK & DECKERHAMPSTEAD
- MODERN IDEAL CLEANERSWESTMINSTER