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Inola PWA

Sewage treatment plant, Inola, Oklahoma. NPDES permit OK0033618, in force until Feb 28, 2030. Last 12 months: over a limit 8 times (last June 2026), 3 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (13 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
14 values over a limit, 0 required values missing, 3 of 12 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period endingParameterReportedLimitOver by
October 2025BOD, 5-day, 20 deg. C, monthly average61.3 mg/L≤ 30 mg/L104%
October 2025BOD, 5-day, 20 deg. C, weekly average152.801 mg/L≤ 45 mg/L240%
January 2026BOD, 5-day, 20 deg. C, monthly average33.1 mg/L≤ 30 mg/L10%
January 2026BOD, 5-day, 20 deg. C, weekly average70.6 mg/L≤ 45 mg/L57%
January 2026Coliform, total general, daily maximum24200 MPN/100mL≤ 20000 MPN/100mL21%
June 2026BOD, 5-day, 20 deg. C, monthly average126.7 lb/d≤ 100.1 lb/d27%
June 2026E. coli, daily maximum727 MPN/100mL≤ 406 MPN/100mL79%
June 2026E. coli, geometric mean246.7 MPN/100mL≤ 126 MPN/100mL96%

Limits in force (15)

ParameterStatisticLimitMonths
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 100.1 lb/dall year
pHminimum≥ 6.5 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 90 mg/Lall year
Solids, total suspendedweekly average≤ 135 mg/Lall year
Solids, total suspendedmonthly average≤ 300.2 lb/dall year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Chlorine, total residualinstantaneous maximum≤ .099 mg/Lall year
E. coligeometric mean≤ 126 MPN/100mLMay–Sep
E. colidaily maximum≤ 406 MPN/100mLMay–Sep
Coliform, total generalgeometric mean≤ 5000 MPN/100mLJan, Feb, Mar, Apr, Oct, Nov, Dec
Coliform, total generaldaily maximum≤ 20000 MPN/100mLJan, Feb, Mar, Apr, Oct, Nov, Dec

Cited limits by parameter: Oklahoma's rules and the federal ones.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/OK0033618 · MCP: https://passage-data.com/mcp