Hancock County, ME
The federal environmental record for Hancock County (population 56,526): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
1
Superfund NPL sites
7
federal cleanup sites
2
PFAS-detecting water systems
1
TRI facilities
1
open tank releases
Superfund NPL sites
| Site | City | Status | Listed |
|---|---|---|---|
| Callahan Mine | Brooksville | on the NPL | 09/05/2002 |
Drinking water: PFAS testing
Public water systems serving Hancock 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 BAR HARBOR- WATER DIVISION ME0090120 | PFHxA: 3.2 ng/L PFPeA: 3 ng/L | detected |
| FRANKLIN WATER DEPARTMENT, ME ME0090570 | PFHxA: 10.2 ng/L PFBA: 6 ng/L PFPeA: 4 ng/L | detected |
On a system with detections? Testing and treatment options
Facilities reporting toxic releases (2024)
1 facilities in Hancock filed TRI reports for 2024, totalling 5k lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| HINCKLEY CO | TRENTON | Styrene | 5k lb |
Underground fuel tanks
EPA's UST Finder records 262 tank facilities in Hancock: 78 tanks in service and 569 closed. 118 fuel releases are on record, of which 1 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Hancock 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 Hancock, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- CALLAHAN MINING CORPBROOKSVILLE (CAPE ROSIER)
- HANCOCK ELLSWORTH TANNERYHANCOCK
- KERRAMERICAN MINE (FORMER)BLUE HILL
- NAVAL SECURITY GROUP ACTIVITYCOREA
- NAVAL SECURITY GROUP ACTIVITY WINTER HARBORWINTER HARBOR
- ROBBINS PROPERTYELLSWORTH
- WORCESTER ASSOCIATES LANDFILLSOUTHWEST HARBOR