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Hominy, City of

Sewage treatment plant, Hominy, Oklahoma. NPDES permit OK0027618, in force until Jun 30, 2027. Last 12 months: over a limit 41 times (last August 2026), 1 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (17 values)
Renewal application due
Jan 1, 2027 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
59 values over a limit, 56 required values missing, 6 of 12 reports late

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

All 41 values over a limit
Period endingParameterReportedLimitOver by
October 2025E. coli, daily maximum2420 MPN/100mL≤ 2030 MPN/100mL19%
October 2025pH, minimum6.19 SU≥ 6.5 SU—
November 2025Chlorine, total residual, instantaneous maximum.34 mg/L≤ .099 mg/L243%
November 2025pH, minimum6.24 SU≥ 6.5 SU—
December 2025Chlorine, total residual, instantaneous maximum1.31 mg/L≤ .099 mg/L1223%
December 2025E. coli, daily maximum2420 MPN/100mL≤ 2030 MPN/100mL19%
December 2025pH, minimum6.11 SU≥ 6.5 SU—
January 2026Chlorine, total residual, instantaneous maximum.19 mg/L≤ .099 mg/L92%
January 2026pH, minimum6.25 SU≥ 6.5 SU—
February 2026Chlorine, total residual, instantaneous maximum.89 mg/L≤ .099 mg/L799%
February 2026E. coli, daily maximum2420 MPN/100mL≤ 2030 MPN/100mL19%
February 2026pH, minimum5.83 SU≥ 6.5 SU—
March 2026Chlorine, total residual, instantaneous maximum2.1 mg/L≤ .099 mg/L2021%
March 2026E. coli, daily maximum2420 MPN/100mL≤ 2030 MPN/100mL19%
March 2026pH, minimum6.1 SU≥ 6.5 SU—
April 2026BOD, 5-day, 20 deg. C, monthly average< 174 mg/L≤ 20 mg/L770%
April 2026BOD, 5-day, 20 deg. C, monthly average< 77.7 lb/d≤ 66.7 lb/d16%
April 2026BOD, 5-day, 20 deg. C, weekly average346 mg/L≤ 30 mg/L1053%
April 2026Chlorine, total residual, instantaneous maximum.24 mg/L≤ .099 mg/L142%
April 2026E. coli, daily maximum2420 MPN/100mL≤ 2030 MPN/100mL19%
April 2026Solids, total suspended, monthly average< 170.6 lb/d≤ 100.1 lb/d70%
April 2026Solids, total suspended, monthly average< 382 mg/L≤ 30 mg/L1173%
April 2026Solids, total suspended, weekly average760 mg/L≤ 45 mg/L1589%
May 2026Chlorine, total residual, instantaneous maximum1.12 mg/L≤ .099 mg/L1031%
May 2026E. coli, daily maximum2420 MPN/100mL≤ 406 MPN/100mL496%
May 2026pH, minimum6.49 SU≥ 6.5 SU—
June 2026Chlorine, total residual, instantaneous maximum.36 mg/L≤ .099 mg/L264%
June 2026E. coli, daily maximum2420 MPN/100mL≤ 406 MPN/100mL496%
June 2026E. coli, geometric mean2420 MPN/100mL≤ 126 MPN/100mL1821%
June 2026Oxygen, dissolved [DO], monthly minimum4.97 mg/L≥ 6 mg/L17%
July 2026BOD, 5-day, 20 deg. C, monthly average18.2 mg/L≤ 14 mg/L30%
July 2026BOD, 5-day, 20 deg. C, weekly average33.8 mg/L≤ 21 mg/L61%
July 2026Chlorine, total residual, instantaneous maximum.28 mg/L≤ .099 mg/L183%
July 2026E. coli, daily maximum2420 MPN/100mL≤ 406 MPN/100mL496%
July 2026E. coli, geometric mean344.2 MPN/100mL≤ 126 MPN/100mL173%
July 2026Oxygen, dissolved [DO], monthly minimum5.92 mg/L≥ 6 mg/L1%
July 2026pH, minimum3.97 SU≥ 6.5 SU—
August 2026Chlorine, total residual, instantaneous maximum.21 mg/L≤ .099 mg/L112%
August 2026E. coli, daily maximum2420 MPN/100mL≤ 406 MPN/100mL496%
August 2026E. coli, geometric mean1372 MPN/100mL≤ 126 MPN/100mL989%
August 2026Oxygen, dissolved [DO], monthly minimum5.86 mg/L≥ 6 mg/L2%

Limits in force (23)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]monthly minimum≥ 3 mg/LJan, Feb, Mar, Apr, May, Nov, Dec
Oxygen, dissolved [DO]monthly minimum≥ 6 mg/LJun–Oct
BOD, 5-day, 20 deg. Cmonthly average≤ 14 mg/LJun–Oct
BOD, 5-day, 20 deg. Cmonthly average≤ 20 mg/LJan, Feb, Mar, Apr, May, Nov, Dec
BOD, 5-day, 20 deg. Cweekly average≤ 21 mg/LJun–Oct
BOD, 5-day, 20 deg. Cweekly average≤ 30 mg/LJan, Feb, Mar, Apr, May, Nov, Dec
BOD, 5-day, 20 deg. Cmonthly average≤ 46.7 lb/dJun–Oct
BOD, 5-day, 20 deg. Cmonthly average≤ 66.7 lb/dJan, Feb, Mar, Apr, May, Nov, Dec
pHminimum≥ 6.5 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedweekly average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 100.1 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 12 mg/LJun–Oct
Nitrogen, ammonia total [as N]weekly average≤ 18 mg/LJun–Oct
Nitrogen, ammonia total [as N]monthly average≤ 40 lb/dJun–Oct
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

How strict are these limits?

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

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