Green River Wastewater Treatment Plant
Green River, WY · Sweetwater County · Publicly Owned Treatment Works
- Average flow
- 0.37 MGD
- Design flow
- —
- NPDES permit
- WY0020443
- Effective
- Permit expires
- June 2031
- Population served
- —
- CWNS 2022
Green River Wastewater Treatment Plant is a publicly owned wastewater treatment works in Green River, Sweetwater County, Wyoming treating an average of 0.37 million gallons per day. Treatment on site includes aerated lagoons, uncovered lagoons. It discharges under NPDES permit WY0020443 (effective), which expires in June 2031, with 13 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Compliance snapshot (last 3 years)
- Total violations
- 13
- Effluent violations
- 4
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Green River Wastewater Treatment Plant.
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Nearby wastewater treatment plants in Wyoming
Rock Springs · 10 mi away
2 MGD
Lyman · 44 mi away
0.4 MGD
Mountain View · 47 mi away
0.2 MGD
Kemmerer · 59 mi away
0.23 MGD
Big Piney · 78 mi away
0.14 MGD
Marbleton · 79 mi away
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Bear River · 81 mi away
—
Evanston · 82 mi away
0.96 MGD
Green River Wastewater Treatment Plant: frequently asked questions
Sources and methodology
Flow, permit and violation figures come from the EPA's ICIS-NPDES discharge monitoring records. Population served comes from the Clean Watersheds Needs Survey 2022. Treatment structures are identified by Klarifi's review of aerial imagery, and capital improvement projects are extracted from published municipal budget documents. Violations are counted over the last three years of monitoring reports.
Data refreshed September 11, 2026; facility record last updated August 19, 2026.