Stilwell Area Development Auth
4 East Walnut, Stilwell, OK 74960 · Adair County · Publicly Owned Treatment Works
- Average flow
- 1.12 MGD
- Design flow
- 1.3 MGD
- NPDES permit
- OK0030341
- Effective
- Permit expires
- October 2030
- Population served
- 3,452
- CWNS 2022
Stilwell Area Development Auth is a publicly owned wastewater treatment plant in Stilwell, Adair County, Oklahoma treating an average of 1.12 million gallons per day against a permitted design capacity of 1.3 MGD, serving about 3,452 residents. It discharges under NPDES permit OK0030341 (effective), which expires in October 2030, with 39 recorded violations in the last three years.
Treatment technology
2 treatment structures and unit processes identified at Stilwell Area Development Auth.
Available with a free Klarifi account
See the full treatment train at Stilwell Area Development Auth: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 39
- Effluent violations
- 19
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Stilwell Area Development Auth, with validated emails and direct phone numbers.
Unlock 1 verified contact
Names, validated emails and direct phone numbers for decision-makers at Stilwell Area Development Auth, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Oklahoma
Westville · 10 mi away
0.21 MGD
Tahlequah · 18 mi away
4.17 MGD
Muldrow · 30 mi away
0.44 MGD
Vian · 30 mi away
0.12 MGD
Sallisaw · 30 mi away
1.42 MGD
Roland · 30 mi away
0.38 MGD
Hulbert · 30 mi away
0.09 MGD
Gans · 31 mi away
0.13 MGD
Stilwell Area Development Auth: 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 May 24, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Tertiary treatment · Significant industrial user · all terms