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Oologah PWA

Sewage treatment plant, Oologah, Oklahoma. NPDES permit OK0034223, in force until Feb 28, 2027. Last 12 months: over a limit 47 times (last September 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (17 values)
Renewal application due
Sep 1, 2026 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
79 values over a limit, 0 required values missing, 0 of 12 reports late

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

All 47 values over a limit
Period endingParameterReportedLimitOver by
October 2025BOD, carbonaceous [5 day, 20 C], monthly average22.5 mg/L≤ 10 mg/L125%
October 2025BOD, carbonaceous [5 day, 20 C], weekly average37.4 mg/L≤ 15 mg/L149%
October 2025E. coli, daily maximum2420 MPN/100mL≤ 2030 MPN/100mL19%
October 2025Nitrogen, ammonia total [as N], monthly average5.75 mg/L≤ 2 mg/L188%
October 2025Nitrogen, ammonia total [as N], weekly average10.1 mg/L≤ 3 mg/L237%
November 2025Solids, total suspended, monthly average35.6 mg/L≤ 30 mg/L19%
December 2025BOD, 5-day, 20 deg. C, monthly average27 mg/L≤ 20 mg/L35%
December 2025E. coli, daily maximum2420 MPN/100mL≤ 2030 MPN/100mL19%
January 2026BOD, 5-day, 20 deg. C, monthly average51.8 mg/L≤ 20 mg/L159%
January 2026BOD, 5-day, 20 deg. C, weekly average56.7 mg/L≤ 30 mg/L89%
January 2026E. coli, daily maximum2420 MPN/100mL≤ 2030 MPN/100mL19%
January 2026E. coli, geometric mean716 MPN/100mL≤ 630 MPN/100mL14%
February 2026BOD, 5-day, 20 deg. C, monthly average64.4 mg/L≤ 20 mg/L222%
February 2026BOD, 5-day, 20 deg. C, weekly average76.7 mg/L≤ 30 mg/L156%
February 2026Solids, total suspended, monthly average62.3 mg/L≤ 30 mg/L108%
February 2026Solids, total suspended, weekly average64.6 mg/L≤ 45 mg/L44%
March 2026BOD, 5-day, 20 deg. C, monthly average76.5 mg/L≤ 20 mg/L283%
March 2026BOD, 5-day, 20 deg. C, weekly average121 mg/L≤ 30 mg/L303%
March 2026E. coli, daily maximum2420 MPN/100mL≤ 2030 MPN/100mL19%
March 2026E. coli, geometric mean2420 MPN/100mL≤ 630 MPN/100mL284%
March 2026Solids, total suspended, monthly average59.6 mg/L≤ 30 mg/L99%
March 2026Solids, total suspended, weekly average95.6 mg/L≤ 45 mg/L112%
April 2026BOD, carbonaceous [5 day, 20 C], monthly average30.7 mg/L≤ 10 mg/L207%
April 2026BOD, carbonaceous [5 day, 20 C], weekly average34.9 mg/L≤ 15 mg/L133%
April 2026E. coli, daily maximum2420 MPN/100mL≤ 2030 MPN/100mL19%
April 2026Nitrogen, ammonia total [as N], monthly average14.65 mg/L≤ 4 mg/L266%
April 2026Nitrogen, ammonia total [as N], weekly average16.6 mg/L≤ 6 mg/L177%
April 2026Solids, total suspended, monthly average49.8 mg/L≤ 15 mg/L232%
April 2026Solids, total suspended, weekly average64 mg/L≤ 22.5 mg/L184%
May 2026BOD, carbonaceous [5 day, 20 C], weekly average21.4 mg/L≤ 15 mg/L43%
May 2026E. coli, daily maximum2420 MPN/100mL≤ 406 MPN/100mL496%
May 2026Solids, total suspended, monthly average17.9 mg/L≤ 15 mg/L19%
May 2026Solids, total suspended, weekly average35.3 mg/L≤ 22.5 mg/L57%
June 2026E. coli, daily maximum2420 MPN/100mL≤ 406 MPN/100mL496%
June 2026Nitrogen, ammonia total [as N], monthly average6.01 mg/L≤ 2 mg/L201%
June 2026Nitrogen, ammonia total [as N], weekly average6.57 mg/L≤ 3 mg/L119%
July 2026BOD, carbonaceous [5 day, 20 C], monthly average14 mg/L≤ 10 mg/L40%
July 2026E. coli, daily maximum2420 MPN/100mL≤ 406 MPN/100mL496%
July 2026E. coli, geometric mean192 MPN/100mL≤ 126 MPN/100mL52%
July 2026Nitrogen, ammonia total [as N], monthly average5.945 mg/L≤ 2 mg/L197%
July 2026Nitrogen, ammonia total [as N], weekly average7.77 mg/L≤ 3 mg/L159%
July 2026Solids, total suspended, monthly average26.5 mg/L≤ 15 mg/L77%
July 2026Solids, total suspended, weekly average46.2 mg/L≤ 22.5 mg/L105%
August 2026BOD, carbonaceous [5 day, 20 C], monthly average13.5 mg/L≤ 10 mg/L35%
August 2026BOD, carbonaceous [5 day, 20 C], weekly average23.7 mg/L≤ 15 mg/L58%
August 2026Nitrogen, ammonia total [as N], weekly average3.51 mg/L≤ 3 mg/L17%
September 2026E. coli, daily maximum2420 MPN/100mL≤ 406 MPN/100mL496%

Limits in force (29)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]monthly minimum≥ 4 mg/LJan, Feb, Mar, Nov, Dec
Oxygen, dissolved [DO]instantaneous minimum≥ 5 mg/LApr–Oct
BOD, 5-day, 20 deg. Cmonthly average≤ 20 mg/LJan, Feb, Mar, Nov, Dec
BOD, 5-day, 20 deg. Cweekly average≤ 30 mg/LJan, Feb, Mar, Nov, Dec
BOD, 5-day, 20 deg. Cmonthly average≤ 50 lb/dJan, Feb, Mar, Nov, Dec
pHminimum≥ 6.5 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 15 mg/LApr–Oct
Solids, total suspendedmonthly average≤ 30 mg/LJan, Feb, Mar, Nov, Dec
Solids, total suspendedweekly average≤ 22.5 mg/LApr–Oct
Solids, total suspendedweekly average≤ 45 mg/LJan, Feb, Mar, Nov, Dec
Solids, total suspendedmonthly average≤ 37.5 lb/dApr–Oct
Solids, total suspendedmonthly average≤ 75.1 lb/dJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 2 mg/LJun–Oct
Nitrogen, ammonia total [as N]monthly average≤ 4 mg/LApr, May
Nitrogen, ammonia total [as N]weekly average≤ 3 mg/LJun–Oct
Nitrogen, ammonia total [as N]weekly average≤ 6 mg/LApr, May
Nitrogen, ammonia total [as N]monthly average≤ 5 lb/dJun–Oct
Nitrogen, ammonia total [as N]monthly average≤ 10 lb/dApr, May
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. coligeometric mean≤ 630 MPN/100mLJan, Feb, Mar, Apr, Oct, Nov, Dec
E. colidaily maximum≤ 406 MPN/100mLMay–Sep
E. colidaily maximum≤ 2030 MPN/100mLJan, Feb, Mar, Apr, Oct, Nov, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/LApr–Oct
BOD, carbonaceous [5 day, 20 C]weekly average≤ 15 mg/LApr–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 lb/dApr–Oct

How strict are these limits?

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/OK0034223 · MCP: https://passage-data.com/mcp