Washington County, OK
The federal environmental record for Washington County (population 53,706): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
1
Superfund NPL sites
5
federal cleanup sites
3
PFAS-detecting water systems
1
TRI facilities
1
open tank releases
Superfund NPL sites
| Site | City | Status | Listed |
|---|---|---|---|
| National Zinc Corp. | Bartlesville | proposed | - |
Drinking water: PFAS testing
Public water systems serving Washington 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 |
|---|---|---|
| BARTLESVILLE OK1021401 | PFPeA: 7.3 ng/L PFBA: 5.6 ng/L | detected |
| DEWEY PUBLIC WORKS AUTHORITY OK3007402 | PFBA: 11 ng/L | detected |
| RAMONA PUBLIC WORKS AUTHORITY OK3007408 | PFBA: 5.4 ng/L | detected |
On a system with detections? Testing and treatment options
Facilities reporting toxic releases (2024)
1 facilities in Washington filed TRI reports for 2024, totalling 70k lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| SCHLUMBERGER BARTLESVILLE PRODUCT CENTER | BARTLESVILLE | Nickel, Copper | 70k lb |
Underground fuel tanks
EPA's UST Finder records 127 tank facilities in Washington: 88 tanks in service and 275 closed. 32 fuel releases are on record, of which 1 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Washington as Zone 3, the lowest predicted indoor radon (under 2 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 Washington, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- BARTLESVILLE MERCURY SPILLBARTLESVILLE
- DEWEY MYSTERY SPILLDEWEY
- DEWEY PCB OILDEWEY
- NATIONAL ZINC CORP.BARTLESVILLE
- NATL INST PETROLEUM & ENERGY RESEARCHBARTLESVILLE