Clark County, WA
The federal environmental record for Clark County (population 521,150): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
7
Superfund NPL sites
10
federal cleanup sites
4
PFAS-detecting water systems
20
TRI facilities
73
open tank releases
Superfund NPL sites
| Site | City | Status | Listed |
|---|---|---|---|
| ALCOA (Vancouver Smelter) | Vancouver | deleted | 02/21/1990 |
| Bonneville Power Administration Ross Complex (USDOE) | Vancouver | deleted | 11/21/1989 |
| Boomsnub/Airco | Vancouver | on the NPL | 04/25/1995 |
| Frontier Hard Chrome, Inc. | Vancouver | deleted | 09/08/1983 |
| Toftdahl Drums | Brush Prairie | deleted | 06/10/1986 |
| Vancouver Water Station #1 Contamination | Vancouver | deleted | 05/31/1994 |
| Vancouver Water Station #4 Contamination | Vancouver | deleted | 10/14/1992 |
Drinking water: PFAS testing
Public water systems serving Clark 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 |
|---|---|---|
| CAMAS MUNICIPAL WATER SEWER SYSTEM WA5310800 | PFOS: 12 ng/L PFOA: 4.4 ng/L PFBS: 3.8 ng/L | above final limit |
| CLARK PUBLIC UTILITIES WA5313333 | PFOS: 8.4 ng/L PFOA: 8 ng/L PFHxS: 5.3 ng/L | above final limit |
| VANCOUVER CITY OF WA5391200 | PFOS: 18.6 ng/L PFOA: 11.5 ng/L PFBS: 7.6 ng/L | above final limit |
| WASHOUGAL CITY OF WA5393400 | PFOS: 7.9 ng/L PFBS: 3.3 ng/L PFPeA: 3.1 ng/L | above final limit |
On a system with detections? Testing and treatment options
Facilities reporting toxic releases (2024)
20 facilities in Clark filed TRI reports for 2024, totalling 117k lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| SEH AMERICA INC | VANCOUVER | Nitrate compounds (water dissociable; reportable only when in aqueous solution), Ammonia | 77k lb |
| TSMC WASHINGTON LLC | CAMAS | Nitrate compounds (water dissociable; reportable only when in aqueous solution), Nitric acid | 17k lb |
| FIBER GLASS SYSTEMS LP - RIDGEFIELD FACILITY | RIDGEFIELD | Styrene | 9k lb |
| ANALOG DEVICES/CAMAS SITE | CAMAS | Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), Hydrogen fluoride | 5k lb |
| CHURCH & DWIGHT CO. INC. VANCOUVER FACILITY | VANCOUVER | Zinc compounds | 4k lb |
| TESORO - VANCOUVER WA TERMINAL | VANCOUVER | Toluene, Xylene (mixed isomers) | 2k lb |
| EXTERIOR WOOD INC | WASHOUGAL | Copper compounds | 1k lb |
| GLACIER NORTHWEST INC WEST BATCH PLANT | VANCOUVER | Nitrate compounds (water dissociable; reportable only when in aqueous solution), Lead | 683 lb |
| PENDLETON WOOLEN MILLS | WASHOUGAL | Formic acid | 306 lb |
| GLACIER NORTHWEST INC EAST VANCOUVER READY-MIX PLANT | VANCOUVER | Nitrate compounds (water dissociable; reportable only when in aqueous solution), Lead | 178 lb |
| GEORGIA-PACIFIC CONSUMER OPERATIONS LLC | CAMAS | 1,3-Dichloro-2-propanol | 20 lb |
| COLUMBIA MACHINE INC | VANCOUVER | Manganese | 12 lb |
| FABRICATED PRODUCTS INC DBA SEAFAB METALS CO | VANCOUVER | Lead And Lead Compounds | 9 lb |
| SIMONDS INTERNATIONAL | RIDGEFIELD | Nickel | 2 lb |
| KEMIRA WATER SOLUTIONS INC. | WASHOUGAL | - | 0 lb |
| CONTROLTEK INC. | VANCOUVER | - | 0 lb |
| NALCO CO | VANCOUVER | - | 0 lb |
| ALLWEATHER WOOD LLC | WASHOUGAL | - | 0 lb |
| SILICON FOREST ELECTRONICS INC. | VANCOUVER | - | 0 lb |
| FRITO-LAY INC. | VANCOUVER | - | 0 lb |
Underground fuel tanks
EPA's UST Finder records 641 tank facilities in Clark: 444 tanks in service and 1,371 closed. 78 fuel releases are on record, of which 73 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Clark 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 Clark, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- BATTLE GROUND MERCURYBATTLE GROUND
- BNSF RAILWAY COMPANYVANCOUVER
- BOOMSNUB AIRCO SUPERFUND SITEVANCOUVER
- CAMP BONNEVILLE MILITARY RESERVATION SITEVANCOUVER
- COPPER LANE APARTMENTS MERCURYVANCOUVER
- FRONTIER HARDCHROMEVANCOUVER
- USARMY NG VANCOUVER BARRACKSVANCOUVER
- VANCOUVER PORT LOWER RIVERVANCOUVER
- VANCOUVER WATER STATION #1 CONTAMINATIONVANCOUVER
- VANCOUVER WATER STATION #4 CONTAMINATIONVANCOUVER