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Muddy Creek Wastewater Treatment Plant

Sewage treatment plant, major discharger, Cincinnati, Ohio. NPDES permit OH0025470, in force until Mar 31, 2030. Last 12 months: over a limit 3 times (last July 2026), 2 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: outfall 001 form A monthly (49 values), outfall 601 form A monthly (24 values), outfall 801 form A monthly (15 values), outfall 901 form A monthly (17 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
1 value over a limit, 10 required values missing, 0 of 53 reports late

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

Period endingParameterReportedLimitOver by
April 2026BOD, carbonaceous [5 day, 20 C], weekly maximum26≤ 24 mg/L8%
June 2026E. coli, MTEC-MF, weekly geometric mean255.9≤ 240 MPN/100mL7%
July 2026E. coli, MTEC-MF, weekly geometric mean273.5≤ 240 MPN/100mL14%

Limits in force (138)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. centigrademonthly averagereport only (deg C)all year001
Temperature, water deg. centigradedaily maximumreport only (deg C)all year001
Oxygen, dissolved [DO]daily minimumreport only (mg/L)all year001
Solids, total suspendedmonthly average≤ 23 mg/Lall year001
Solids, total suspendedweekly maximum≤ 34 mg/Lall year001
Solids, total suspendedmonthly average≤ 1308 kg/dall year001
Solids, total suspendedweekly maximum≤ 1933 kg/dall year001
Oil and grease, hexane extr methoddaily maximum≤ 10 mg/Lall year001
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all year001
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year001
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all year001
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)all year001
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all year001
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all year001
Phosphorus, total [as P]monthly averagereport only (mg/L)all year001
Phosphorus, total [as P]daily maximumreport only (mg/L)all year001
Phosphate, ortho, dissolved [as P]monthly averagereport only (mg/L)all year001
Phosphate, ortho, dissolved [as P]daily maximumreport only (mg/L)all year001
Nickel, total recoverablemonthly averagereport only (ug/L)all year001
Nickel, total recoverabledaily maximumreport only (ug/L)all year001
Zinc, total recoverablemonthly averagereport only (ug/L)all year001
Zinc, total recoverabledaily maximumreport only (ug/L)all year001
Cadmium, total recoverablemonthly averagereport only (ug/L)all year001
Cadmium, total recoverabledaily maximumreport only (ug/L)all year001
Lead, total recoverablemonthly averagereport only (ug/L)all year001
Lead, total recoverabledaily maximumreport only (ug/L)all year001
Chromium, total recoverablemonthly averagereport only (ug/L)all year001
Chromium, total recoverabledaily maximumreport only (ug/L)all year001
Copper, total recoverablemonthly averagereport only (ug/L)all year001
Copper, total recoverabledaily maximumreport only (ug/L)all year001
Chromium, hexavalent dissolved [as Cr]monthly averagereport only (ug/L)all year001
Chromium, hexavalent dissolved [as Cr]daily maximumreport only (ug/L)all year001
Coliform, fecal MF, MFC broth, 44.5 Cmonthly geometric mean≤ 1000 #/100mLJan, Feb, Mar, Apr, Nov, Dec001
Coliform, fecal MF, MFC broth, 44.5 Cweekly geometric mean≤ 2000 #/100mLJan, Feb, Mar, Apr, Nov, Dec001
E. coli, MTEC-MFmonthly geometric mean≤ 126 MPN/100mLMay–Oct001
E. coli, MTEC-MFweekly geometric mean≤ 240 MPN/100mLMay–Oct001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Chlorine, total residualdaily maximumreport only (mg/L)all year001
Mercury, total low levelmonthly averagereport only (ng/L)all year001
Mercury, total low leveldaily maximumreport only (ng/L)all year001
Cyanide, free availablemonthly averagereport only (ug/L)all year001
Cyanide, free availabledaily maximumreport only (ug/L)all year001
Toxicity [acute], Ceriodaphnia dubiamonthly averagereport only (tox acute)Aug001
Toxicity [acute], Ceriodaphnia dubiadaily maximumreport only (tox acute)Aug001
Toxicity [acute], Pimephales promelas [Fathead Minnow]monthly averagereport only (tox acute)Aug001
Toxicity [acute], Pimephales promelas [Fathead Minnow]daily maximumreport only (tox acute)Aug001
pH, maximumdaily maximum≤ 9 SUall year001
pH, minimumdaily minimum≥ 6 SUall year001
Solids, total dissolved- 180 deg. Cmonthly averagereport only (mg/L)all year001
Solids, total dissolved- 180 deg. Cdaily maximumreport only (mg/L)all year001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 16 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]weekly maximum≤ 24 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 910 kg/dall year001
BOD, carbonaceous [5 day, 20 C]weekly maximum≤ 1365 kg/dall year001
Solids, total suspendedmonthly averagereport only (mg/L)all year522
Solids, total suspendeddaily maximumreport only (mg/L)all year522
E. coli, MTEC-MFmonthly geometric meanreport only (MPN/100mL)May–Oct522
E. coli, MTEC-MFdaily maximumreport only (MPN/100mL)May–Oct522
Chlorine, total residualdaily maximumreport only (mg/L)May–Oct522
Overflowsmonthly averagereport only (occur/mo)all year522
Overflowsdaily maximumreport only (occur/mo)all year522
Overflow volume [SS0 volume, CSO volume]monthly averagereport only (Mgal)all year522
Overflow volume [SS0 volume, CSO volume]daily maximumreport only (Mgal)all year522
Biosolids weight indluding admixturesmonthly averagereport only (dry ton)Dec586
Biosolids weight indluding admixturesdaily maximumreport only (dry ton)Dec586
Sludge weight, drymonthly averagereport only (dry ton)Dec588
Sludge weight, drydaily maximumreport only (dry ton)Dec588
Solids, total suspendedmonthly averagereport only (mg/L)all year601
Solids, total suspendeddaily maximumreport only (mg/L)all year601
Cyanide, total [as CN]monthly averagereport only (mg/L)all year601
Cyanide, total [as CN]daily maximumreport only (mg/L)all year601
Nickel, total recoverablemonthly averagereport only (ug/L)all year601
Nickel, total recoverabledaily maximumreport only (ug/L)all year601
Zinc, total recoverablemonthly averagereport only (ug/L)all year601
Zinc, total recoverabledaily maximumreport only (ug/L)all year601
Cadmium, total recoverablemonthly averagereport only (ug/L)all year601
Cadmium, total recoverabledaily maximumreport only (ug/L)all year601
Lead, total recoverablemonthly averagereport only (ug/L)all year601
Lead, total recoverabledaily maximumreport only (ug/L)all year601
Chromium, total recoverablemonthly averagereport only (ug/L)all year601
Chromium, total recoverabledaily maximumreport only (ug/L)all year601
Copper, total recoverablemonthly averagereport only (ug/L)all year601
Copper, total recoverabledaily maximumreport only (ug/L)all year601
Chromium, hexavalent dissolved [as Cr]monthly averagereport only (ug/L)all year601
Chromium, hexavalent dissolved [as Cr]daily maximumreport only (ug/L)all year601
Mercury, total low levelmonthly averagereport only (ng/L)all year601
Mercury, total low leveldaily maximumreport only (ng/L)all year601
pH, maximumdaily maximumreport only (SU)all year601
pH, minimumdaily minimumreport only (SU)all year601
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all year601
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (mg/L)all year601
Solids, total suspendedmonthly averagereport only (mg/L)all year602
Solids, total suspendeddaily maximumreport only (mg/L)all year602
Bypass Volumemonthly averagereport only (Mgal)all year602
Bypass Volumedaily maximumreport only (Mgal)all year602
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all year602
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (mg/L)all year602
Bypass valvemonthly averagereport only (occur/mo)all year602
Bypass valvedaily maximumreport only (occur/mo)all year602
Bypass of treatmentmonthly averagereport only (hr/mo)all year602
Bypass of treatmentdaily maximumreport only (hr/mo)all year602
Temperature, water deg. centigrademonthly averagereport only (deg C)May–Oct801
Temperature, water deg. centigradedaily maximumreport only (deg C)May–Oct801
Oxygen, dissolved [DO]daily minimumreport only (mg/L)May–Oct801
pHdaily minimumreport only (SU)May–Oct801
pHdaily maximumreport only (SU)May–Oct801
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)May–Oct801
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)May–Oct801
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)May–Oct801
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)May–Oct801
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)May–Oct801
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)May–Oct801
Phosphorus, total [as P]monthly averagereport only (mg/L)May–Oct801
Phosphorus, total [as P]daily maximumreport only (mg/L)May–Oct801
E. coli, MTEC-MFmonthly geometric meanreport only (MPN/100mL)May–Oct801
E. coli, MTEC-MFdaily maximumreport only (MPN/100mL)May–Oct801
%Effect Static Renewal 48Hr Acute Ceriodaphnia dubiamonthly averagereport only (%)Aug801
%Effect Static Renewal 48Hr Acute Ceriodaphnia dubiadaily maximumreport only (%)Aug801
%Effect Static Renewal 96Hr Acute Pimephales promelasmonthly averagereport only (%)Aug801
%Effect Static Renewal 96Hr Acute Pimephales promelasdaily maximumreport only (%)Aug801
Temperature, water deg. centigrademonthly averagereport only (deg C)May–Oct901
Temperature, water deg. centigradedaily maximumreport only (deg C)May–Oct901
Oxygen, dissolved [DO]daily minimumreport only (mg/L)May–Oct901
pHdaily minimumreport only (SU)May–Oct901
pHdaily maximumreport only (SU)May–Oct901
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)May–Oct901
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)May–Oct901
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)May–Oct901
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)May–Oct901
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)May–Oct901
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)May–Oct901
Phosphorus, total [as P]monthly averagereport only (mg/L)May–Oct901
Phosphorus, total [as P]daily maximumreport only (mg/L)May–Oct901
Hardness, total [as CaCO3]monthly averagereport only (mg/L)May–Oct901
Hardness, total [as CaCO3]daily maximumreport only (mg/L)May–Oct901
E. coli, MTEC-MFmonthly geometric meanreport only (MPN/100mL)May–Oct901
E. coli, MTEC-MFdaily maximumreport only (MPN/100mL)May–Oct901

How strict are these limits?

Cited limits by parameter: Ohio'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/OH0025470 · MCP: https://passage-data.com/mcp