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Hamilton Co Brd of Comm Metropolitan SD

Sewage treatment plant, major discharger, Cincinnati, Ohio. NPDES permit OH0040983, in force until Aug 31, 2027. Last 12 months: no values over a limit, 4 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: outfall 001 form A monthly (36 values), outfall 601 form A monthly (8 values), outfall 801 form A monthly (8 values), outfall 901 form A monthly (14 values)
Renewal application due
Mar 4, 2027 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
2 values over a limit, 4 required values missing, 0 of 49 reports late

Limits in force (116)

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 minimum≥ 5 mg/Lall year001
Solids, total suspendedmonthly average≤ 20 mg/Lall year001
Solids, total suspendedweekly maximum≤ 30 mg/Lall year001
Solids, total suspendedmonthly average≤ 417 kg/dall year001
Solids, total suspendedweekly maximum≤ 625 kg/dall year001
Oil and grease, hexane extr methoddaily maximum≤ 10 mg/Lall year001
Nitrogen, ammonia total [as N]monthly average≤ 7 mg/Lall year001
Nitrogen, ammonia total [as N]weekly maximum≤ 10.5 mg/Lall year001
Nitrogen, ammonia total [as N]monthly average≤ 146 kg/dall year001
Nitrogen, ammonia total [as N]weekly maximum≤ 219 kg/dall 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
Selenium, total recoverablemonthly average≤ 8.9 ug/Lall year001
Selenium, total recoverabledaily maximum≤ 105 ug/Lall year001
Selenium, total recoverablemonthly average≤ .186 kg/dall year001
Selenium, total recoverabledaily maximum≤ 2.19 kg/dall year001
Nickel, total recoverablemonthly averagereport only (ug/L)Mar, Jun, Aug, Dec001
Nickel, total recoverabledaily maximumreport only (ug/L)Mar, Jun, Aug, Dec001
Zinc, total recoverablemonthly averagereport only (ug/L)Mar, Jun, Aug, Dec001
Zinc, total recoverabledaily maximumreport only (ug/L)Mar, Jun, Aug, Dec001
Cadmium, total recoverablemonthly averagereport only (ug/L)Mar, Jun, Aug, Dec001
Cadmium, total recoverabledaily maximumreport only (ug/L)Mar, Jun, Aug, Dec001
Lead, total recoverablemonthly averagereport only (ug/L)Mar, Jun, Aug, Dec001
Lead, total recoverabledaily maximumreport only (ug/L)Mar, Jun, Aug, Dec001
Chromium, total recoverablemonthly averagereport only (ug/L)Mar, Jun, Aug, Dec001
Chromium, total recoverabledaily maximumreport only (ug/L)Mar, Jun, Aug, Dec001
Copper, total recoverablemonthly averagereport only (ug/L)Mar, Jun, Aug, Dec001
Copper, total recoverabledaily maximumreport only (ug/L)Mar, Jun, Aug, Dec001
Chromium, hexavalent dissolved [as Cr]monthly averagereport only (ug/L)Mar, Jun, Aug, Dec001
Chromium, hexavalent dissolved [as Cr]daily maximumreport only (ug/L)Mar, Jun, Aug, Dec001
E. coli, MTEC-MFmonthly geometric mean≤ 126 MPN/100mLMay–Oct001
E. coli, MTEC-MFweekly geometric mean≤ 284 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
Mercury, total low levelmonthly averagereport only (ng/L)Mar, Jun, Aug, Dec001
Mercury, total low leveldaily maximumreport only (ng/L)Mar, Jun, Aug, Dec001
Cyanide, free availablemonthly averagereport only (ug/L)Mar, Jun, Aug, Dec001
Cyanide, free availabledaily maximumreport only (ug/L)Mar, Jun, Aug, Dec001
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)Feb, May, Aug, Nov001
Toxicity [acute], Pimephales promelas [Fathead Minnow]daily maximumreport only (tox acute)Feb, May, Aug, Nov001
pH, maximumdaily maximum≤ 9 SUall year001
pH, minimumdaily minimum≥ 6.5 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≤ 334 kg/dall year001
BOD, carbonaceous [5 day, 20 C]weekly maximum≤ 500 kg/dall year001
Sludge weight, drymonthly averagereport only (dry ton)Dec588
Sludge weight, drydaily maximumreport only (dry ton)Dec588
pHdaily minimumreport only (SU)all year601
pHdaily maximumreport only (SU)all year601
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)Mar, Jun, Aug, Dec601
Cyanide, total [as CN]daily maximumreport only (mg/L)Mar, Jun, Aug, Dec601
Selenium, total recoverablemonthly averagereport only (ug/L)all year601
Selenium, total recoverabledaily maximumreport only (ug/L)all year601
Nickel, total recoverablemonthly averagereport only (ug/L)Mar, Jun, Aug, Dec601
Nickel, total recoverabledaily maximumreport only (ug/L)Mar, Jun, Aug, Dec601
Zinc, total recoverablemonthly averagereport only (ug/L)Mar, Jun, Aug, Dec601
Zinc, total recoverabledaily maximumreport only (ug/L)Mar, Jun, Aug, Dec601
Cadmium, total recoverablemonthly averagereport only (ug/L)Mar, Jun, Aug, Dec601
Cadmium, total recoverabledaily maximumreport only (ug/L)Mar, Jun, Aug, Dec601
Lead, total recoverablemonthly averagereport only (ug/L)Mar, Jun, Aug, Dec601
Lead, total recoverabledaily maximumreport only (ug/L)Mar, Jun, Aug, Dec601
Chromium, total recoverablemonthly averagereport only (ug/L)Mar, Jun, Aug, Dec601
Chromium, total recoverabledaily maximumreport only (ug/L)Mar, Jun, Aug, Dec601
Copper, total recoverablemonthly averagereport only (ug/L)Mar, Jun, Aug, Dec601
Copper, total recoverabledaily maximumreport only (ug/L)Mar, Jun, Aug, Dec601
Chromium, hexavalent dissolved [as Cr]monthly averagereport only (ug/L)Mar, Jun, Aug, Dec601
Chromium, hexavalent dissolved [as Cr]daily maximumreport only (ug/L)Mar, Jun, Aug, Dec601
Mercury, total low levelmonthly averagereport only (ng/L)Mar, Jun, Aug, Dec601
Mercury, total low leveldaily maximumreport only (ng/L)Mar, Jun, Aug, Dec601
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
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all year801
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year801
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all year801
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)all year801
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all year801
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all year801
Phosphorus, total [as P]monthly averagereport only (mg/L)all year801
Phosphorus, total [as P]daily maximumreport only (mg/L)all year801
E. coli, MTEC-MFmonthly geometric meanreport only (MPN/100mL)Jun–Aug801
E. coli, MTEC-MFdaily maximumreport only (MPN/100mL)Jun–Aug801
%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 (%)Feb, May, Aug, Nov801
%Effect Static Renewal 96Hr Acute Pimephales promelasdaily maximumreport only (%)Feb, May, Aug, Nov801
Temperature, water deg. centigrademonthly averagereport only (deg C)all year901
Temperature, water deg. centigradedaily maximumreport only (deg C)all year901
pHdaily minimumreport only (SU)all year901
pHdaily maximumreport only (SU)all year901
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all year901
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year901
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all year901
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)all year901
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all year901
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all year901
Phosphorus, total [as P]monthly averagereport only (mg/L)all year901
Phosphorus, total [as P]daily maximumreport only (mg/L)all year901
Hardness, total [as CaCO3]monthly averagereport only (mg/L)all year901
Hardness, total [as CaCO3]daily maximumreport only (mg/L)all year901
E. coli, MTEC-MFmonthly geometric meanreport only (MPN/100mL)Jun–Aug901
E. coli, MTEC-MFdaily maximumreport only (MPN/100mL)Jun–Aug901

How strict are these limits?

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

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/OH0040983 · MCP: https://passage-data.com/mcp