Douglas Wastewater Lagoon
W Grant St, Douglas, WY 82633 · Converse County · Publicly Owned Treatment Works
- Average flow
- 0.43 MGD
- Design flow
- —
- NPDES permit
- WY0020109
- Effective
- Permit expires
- October 2030
- Population served
- —
- CWNS 2022
Douglas Wastewater Lagoon is a publicly owned wastewater treatment works in Douglas, Converse County, Wyoming treating an average of 0.43 million gallons per day. It discharges under NPDES permit WY0020109 (effective), which expires in October 2030, with 4 recorded violations in the last three years.
Treatment technology
2 treatment structures and unit processes identified at Douglas Wastewater Lagoon.
Available with a free Klarifi account
See the full treatment train at Douglas Wastewater Lagoon: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 4
- 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 Douglas Wastewater Lagoon.
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Nearby wastewater treatment plants in Wyoming
Glenrock · 25 mi away
0.17 MGD
Hartville · 45 mi away
0.01 MGD
Casper · 46 mi away
6.6 MGD
Guernsey · 48 mi away
—
Fort Laramie · 58 mi away
—
Wright · 71 mi away
0.09 MGD
Rock River · 74 mi away
—
Torrington · 79 mi away
0.44 MGD
Douglas 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 October 26, 2026; facility record last updated August 18, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Biological nutrient removal · Tertiary treatment · all terms