Lewis County, WA
The federal environmental record for Lewis County (population 86,154): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
3
Superfund NPL sites
7
federal cleanup sites
1
PFAS-detecting water systems
8
TRI facilities
86
open tank releases
Superfund NPL sites
| Site | City | Status | Listed |
|---|---|---|---|
| American Crossarm & Conduit Co. | Chehalis | deleted | 10/04/1989 |
| Centralia Municipal Landfill | Centralia | on the NPL | 08/30/1990 |
| Hamilton/Labree Roads Ground Water Contamination | Chehalis | on the NPL | 07/27/2000 |
Drinking water: PFAS testing
Public water systems serving Lewis 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 |
|---|---|---|
| CENTRALIA PUBLIC WORKS - WATER WA5312200 | PFOS: 5.8 ng/L PFBS: 4.2 ng/L | above final limit |
On a system with detections? Testing and treatment options
Facilities reporting toxic releases (2024)
8 facilities in Lewis filed TRI reports for 2024, totalling 146k lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| TRANSALTA CENTRALIA GENERATION / MINING | CENTRALIA | Nitrate compounds (water dissociable; reportable only when in aqueous solution), Hydrogen fluoride | 106k lb |
| DARIGOLD - CHEHALIS | CHEHALIS | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 19k lb |
| CARDINAL FG CO | WINLOCK | Ammonia | 18k lb |
| SIERRA PACIFIC INDUSTRIES- CENTRALIA | CENTRALIA | Ammonia | 1k lb |
| IMPERIAL GROUP MANUFACTURING | CHEHALIS | Nickel, Chromium | 397 lb |
| ALADDIN MANUFACTURING CARPET CUSHION - CHEHALIS WA | CHEHALIS | - | 0 lb |
| PERDUE FOODS LLC - CHEHALIS FEEDMILL | CHEHALIS | - | 0 lb |
| NATIONAL FROZEN FOODS CORP-PROCESSING | CHEHALIS | - | 0 lb |
Underground fuel tanks
EPA's UST Finder records 365 tank facilities in Lewis: 195 tanks in service and 815 closed. 88 fuel releases are on record, of which 86 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Lewis 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 Lewis, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- AMERICAN CROSSARM & CONDUIT CO.CHEHALIS
- CENTRALIA MUNICIPAL LANDFILLCENTRALIA
- CHEHALIS GAP FILLER ANNEXCHEHALIS
- CJC WEST LLCCHEHALIS
- COAL CREEK POWER PLANTCHEHALIS
- HAMILTON/LABREE ROADS GW CONTAMINATIONCHEHALIS
- WASHINGTON JUNK COMPANYCHEHALIS