Stigler Municipal Improvement Authority
115 South Broadway, Stigler, OK 74462 · Haskell County · Publicly Owned Treatment Works
- Average flow
- 0.42 MGD
- Design flow
- 0.34 MGD
- NPDES permit
- OK0020711
- Effective
- Permit expires
- July 2029
- Population served
- 2,878
- CWNS 2022
Stigler Municipal Improvement Authority is a publicly owned wastewater treatment plant in Stigler, Haskell County, Oklahoma treating an average of 0.42 million gallons per day against a permitted design capacity of 0.34 MGD, serving about 2,878 residents. It discharges under NPDES permit OK0020711 (effective), which expires in July 2029, with 27 recorded violations in the last three years.
Treatment technology
One treatment structure or unit process identified at Stigler Municipal Improvement Authority.
Available with a free Klarifi account
See the full treatment train at Stigler Municipal Improvement Authority: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 27
- Effluent violations
- 23
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Stigler Municipal Improvement Authority, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Stigler Municipal Improvement Authority, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Oklahoma
Whitefield · 5 mi away
0.01 MGD
Porum · 9 mi away
0.03 MGD
Kinta · 11 mi away
0.02 MGD
Mccurtain · 12 mi away
0.01 MGD
Keota · 12 mi away
0.00048 MGD
Quinton · 16 mi away
0.12 MGD
Webbers Falls · 17 mi away
0.0033 MGD
Warner · 17 mi away
0.07 MGD
Stigler Municipal Improvement Authority: 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 September 11, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Sludge dewatering · Biological nutrient removal · all terms