Grant County, WA
The federal environmental record for Grant County (population 102,678): 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
1
PFAS-detecting water systems
9
TRI facilities
18
open tank releases
Superfund NPL sites
| Site | City | Status | Listed |
|---|---|---|---|
| Moses Lake Wellfield Contamination | Moses Lake | on the NPL | 10/14/1992 |
Drinking water: PFAS testing
Public water systems serving Grant 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 |
|---|---|---|
| MOSES LAKE CITY OF WA5356300 | PFHxS: 54.1 ng/L PFOS: 52.2 ng/L PFHxA: 7.3 ng/L | above final limit |
On a system with detections? Testing and treatment options
Facilities reporting toxic releases (2024)
9 facilities in Grant filed TRI reports for 2024, totalling 321k lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| AMWAY NUTRILITE | QUINCY | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 140k lb |
| SIMPLOT U.S. FOOD GROUP HOLDINGS LLC. | MOSES LAKE | Ammonia, Hydrogen sulfide | 71k lb |
| MOSES LAKE INDUSTRIES INC | MOSES LAKE | Copper And Copper Compounds, Methanol | 65k lb |
| REC SOLAR GRADE SILICON | MOSES LAKE | Copper And Copper Compounds, Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 26k lb |
| SGL COMPOSITES LLC | MOSES LAKE | Hydrogen cyanide, Ammonia | 8k lb |
| TEREX WASHINGTON AWP DIV GENIE INDUSTRIES | MOSES LAKE | Manganese, Lead | 6k lb |
| D&L FOUNDRY INC | MOSES LAKE | Lead, Manganese | 4k lb |
| PERFORMIX NUTRITION SYSTEMS LLC | MOSES LAKE | Zinc compounds, Manganese compounds | 426 lb |
| BOEING A&M MOSES LAKE | MOSES LAKE | Naphthalene | 40 lb |
Underground fuel tanks
EPA's UST Finder records 472 tank facilities in Grant: 188 tanks in service and 1,082 closed. 18 fuel releases are on record, of which 18 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Grant as Zone 2, moderate predicted indoor radon (2 to 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 Grant, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- DELANCEY-HOUGHTON ELEMENTARY SCHOOLSOAP LAKE
- GRAND COULEE DAMCOULEE DAM
- LARSON AFB TITAN MISSILE FACILITY S-2WARDEN
- MOSES LAKE FERTILIZER PLANT FIREMOSES LAKE
- MOSES LAKE WELLFIELD CONTAMINATIONMOSES LAKE
- NOURYONMOSES LAKE
- USDOI BR QUINCY ILLEGAL DUMP SITEQUINCY