Lander Wastewater Lagoon
Lander, WY · Fremont County · Publicly Owned Treatment Works
- Average flow
- 1.24 MGD
- Design flow
- —
- NPDES permit
- WY0020389
- Expired
- Permit expires
- April 2026
- Population served
- —
- CWNS 2022
Lander Wastewater Lagoon is a publicly owned wastewater treatment works in Lander, Fremont County, Wyoming treating an average of 1.24 million gallons per day. Treatment on site includes aerated lagoons, uncovered lagoons. It discharges under NPDES permit WY0020389 (expired), which expires in April 2026, with 43 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
- 43
- Effluent violations
- 43
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Lander Wastewater Lagoon.
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Nearby wastewater treatment plants in Wyoming
Hudson · 8 mi away
0.25 MGD
Fort Washakie · 12 mi away
0.1 MGD
Ethete · 13 mi away
0.0062 MGD
Fort Washakie · 15 mi away
—
Thermopolis · 61 mi away
0.3 MGD
Dubois · 65 mi away
0.06 MGD
Marbleton · 72 mi away
0.31 MGD
Big Piney · 74 mi away
0.14 MGD
Lander Wastewater Lagoon: 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 13, 2026.