Little Miami Wastewater Treatment Plant

NPDES permit OH0025453 · Major POTW · effective, expires 2030-06-30 · EPA's file as of 2026-09-19

Check this month's numbers before you file
Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

EPA's record, 2025-09-01 to 2026-08-31

0values over a limit
0required values missing, on 0 form(s)
0of 78 forms filed late

Last period with anything received: 2026-07-31.

Reporting

Reports are due about 20 days after each monitoring period ends (the most common figure among OH permits in EPA's filings — check your permit).

Limits in force (177)

OutfallParameterStatisticLimitMonths
003Temperature, water deg. centigradeMO AVG report only all year
003Temperature, water deg. centigradeDAILY MX report only all year
003Oxygen, dissolved [DO]DAILY MN >= 5 mg/L all year
003Solids, total suspendedMO AVG <= 30 mg/L all year
003Solids, total suspendedWKLY MAX <= 45 mg/L all year
003Solids, total suspendedMO AVG <= 6245 kg/d all year
003Solids, total suspendedWKLY MAX <= 9368 kg/d all year
003Oil and grease, hexane extr methodDAILY MX <= 10 mg/L all year
003Nitrogen, ammonia total [as N]MO AVG report only all year
003Nitrogen, ammonia total [as N]DAILY MX report only all year
003Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
003Nitrogen, Kjeldahl, total [as N]DAILY MX report only all year
003Nitrite + Nitrate total [as N]MO AVG report only all year
003Nitrite + Nitrate total [as N]DAILY MX report only all year
003Phosphorus, total [as P]MO AVG report only all year
003Phosphorus, total [as P]DAILY MX report only all year
003Phosphate, ortho, dissolved [as P]MO AVG report only all year
003Phosphate, ortho, dissolved [as P]DAILY MX report only all year
003Selenium, total recoverableMO AVG report only all year
003Selenium, total recoverableDAILY MX report only all year
003Nickel, total recoverableMO AVG report only all year
003Nickel, total recoverableDAILY MX report only all year
003Silver total recoverableMO AVG report only all year
003Silver total recoverableDAILY MX report only all year
003Zinc, total recoverableMO AVG report only all year
003Zinc, total recoverableDAILY MX report only all year
003Cadmium, total recoverableMO AVG report only all year
003Cadmium, total recoverableDAILY MX report only all year
003Lead, total recoverableMO AVG report only all year
003Lead, total recoverableDAILY MX report only all year
003Chromium, total recoverableMO AVG report only all year
003Chromium, total recoverableDAILY MX report only all year
003Copper, total recoverableMO AVG report only all year
003Copper, total recoverableDAILY MX report only all year
003Chromium, hexavalent dissolved [as Cr]MO AVG report only all year
003Chromium, hexavalent dissolved [as Cr]DAILY MX report only all year
003Coliform, fecal MF, MFC broth, 44.5 CMO GEOMN <= 1000 #/100mL Jan, Feb, Mar, Apr, Nov, Dec
003Coliform, fecal MF, MFC broth, 44.5 CWK GEOMN <= 2000 #/100mL Jan, Feb, Mar, Apr, Nov, Dec
003E. coli, MTEC-MFMO GEOMN <= 126 MPN/100mL May, Jun, Jul, Aug, Sep, Oct
003E. coli, MTEC-MFWK GEOMN <= 240 MPN/100mL May, Jun, Jul, Aug, Sep, Oct
003DichlorobromomethaneMO AVG report only Mar, Jun, Aug, Dec
003DichlorobromomethaneDAILY MX report only Mar, Jun, Aug, Dec
003DibromochloromethaneMO AVG report only Mar, Jun, Aug, Dec
003DibromochloromethaneDAILY MX report only Mar, Jun, Aug, Dec
003ChloroformMO AVG report only Mar, Jun, Aug, Dec
003ChloroformDAILY MX report only Mar, Jun, Aug, Dec
003Benzo[b]fluorantheneMO AVG report only Mar, Jun, Aug, Dec
003Benzo[b]fluorantheneDAILY MX report only Mar, Jun, Aug, Dec
003Benzo[k]fluorantheneMO AVG report only Mar, Jun, Aug, Dec
003Benzo[k]fluorantheneDAILY MX report only Mar, Jun, Aug, Dec
003Benzo[a]pyreneMO AVG report only Mar, Jun, Aug, Dec
003Benzo[a]pyreneDAILY MX report only Mar, Jun, Aug, Dec
003ChryseneMO AVG report only Mar, Jun, Aug, Dec
003ChryseneDAILY MX report only Mar, Jun, Aug, Dec
003Indeno[1,2,3-cd]pyreneMO AVG report only Mar, Jun, Aug, Dec
003Indeno[1,2,3-cd]pyreneDAILY MX report only Mar, Jun, Aug, Dec
003Methyl bromide [Bromomethane]MO AVG report only Mar, Jun, Aug, Dec
003Methyl bromide [Bromomethane]DAILY MX report only Mar, Jun, Aug, Dec
003Benzo[a]anthraceneMO AVG report only Mar, Jun, Aug, Dec
003Benzo[a]anthraceneDAILY MX report only Mar, Jun, Aug, Dec
003Di[2-ethylhexyl] phthalate [DEHP]MO AVG report only Mar, Jun, Aug, Dec
003Di[2-ethylhexyl] phthalate [DEHP]DAILY MX report only Mar, Jun, Aug, Dec
003Polychlorinated biphenyls [PCBs]MO AVG report only Mar, Jun, Aug, Dec
003Polychlorinated biphenyls [PCBs]DAILY MX report only Mar, Jun, Aug, Dec
003Flow, in conduit or thru treatment plantMO AVG report only all year
003Flow, in conduit or thru treatment plantDAILY MX report only all year
003Chlorine, total residualDAILY MX <= .038 mg/L all year
003Mercury, total low levelMO AVG report only all year
003Mercury, total low levelDAILY MX report only all year
003Carcinogen additivity factorMO AVG report only Mar, Jun, Aug, Dec
003Carcinogen additivity factorDAILY MX report only Mar, Jun, Aug, Dec
003Cyanide, free availableMO AVG report only all year
003Cyanide, free availableDAILY MX report only all year
003Toxicity [acute], Ceriodaphnia dubiaMO AVG report only Aug
003Toxicity [acute], Ceriodaphnia dubiaDAILY MX report only Aug
003Toxicity [acute], Pimephales promelas [Fathead Minnow]MO AVG report only Aug
003Toxicity [acute], Pimephales promelas [Fathead Minnow]DAILY MX report only Aug
003pH, maximumDAILY MX <= 9 SU all year
003pH, minimumDAILY MN >= 6 SU all year
003Solids, total dissolved- 180 deg. CMO AVG report only all year
003Solids, total dissolved- 180 deg. CDAILY MX report only all year
003BOD, carbonaceous [5 day, 20 C]MO AVG <= 25 mg/L all year
003BOD, carbonaceous [5 day, 20 C]WKLY MAX <= 40 mg/L all year
003BOD, carbonaceous [5 day, 20 C]MO AVG <= 5204 kg/d all year
003BOD, carbonaceous [5 day, 20 C]WKLY MAX <= 8327 kg/d all year
004Solids, total suspendedMO AVG report only all year
004Solids, total suspendedDAILY MX report only all year
004Bypass VolumeMO AVG report only all year
004Bypass VolumeDAILY MX report only all year
004BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
004BOD, carbonaceous [5 day, 20 C]DAILY MX report only all year
004Bypass valveMO AVG report only all year
004Bypass valveDAILY MX report only all year
004Bypass of treatmentMO AVG report only all year
004Bypass of treatmentDAILY MX report only all year
098E. coli, MTEC-MFMO GEOMN report only all year
098E. coli, MTEC-MFDAILY MX report only all year
098Flow, in conduit or thru treatment plantMO AVG report only all year
098Flow, in conduit or thru treatment plantDAILY MX report only all year
586Biosolids weight indluding admixturesMO AVG report only Dec
586Biosolids weight indluding admixturesDAILY MX report only Dec
588Biosolids weight indluding admixturesMO AVG report only Dec
588Biosolids weight indluding admixturesDAILY MX report only Dec
601Solids, total suspendedMO AVG report only all year
601Solids, total suspendedDAILY MX report only all year
601Cyanide, total [as CN]MO AVG report only all year
601Cyanide, total [as CN]DAILY MX report only all year
601Selenium, total recoverableMO AVG report only all year
601Selenium, total recoverableDAILY MX report only all year
601Nickel, total recoverableMO AVG report only all year
601Nickel, total recoverableDAILY MX report only all year
601Zinc, total recoverableMO AVG report only all year
601Zinc, total recoverableDAILY MX report only all year
601Cadmium, total recoverableMO AVG report only all year
601Cadmium, total recoverableDAILY MX report only all year
601Lead, total recoverableMO AVG report only all year
601Lead, total recoverableDAILY MX report only all year
601Chromium, total recoverableMO AVG report only all year
601Chromium, total recoverableDAILY MX report only all year
601Copper, total recoverableMO AVG report only all year
601Copper, total recoverableDAILY MX report only all year
601Chromium, hexavalent dissolved [as Cr]MO AVG report only all year
601Chromium, hexavalent dissolved [as Cr]DAILY MX report only all year
601Benzo[a]pyreneMO AVG report only Mar, Jun, Aug, Dec
601Benzo[a]pyreneDAILY MX report only Mar, Jun, Aug, Dec
601Polychlorinated biphenyls [PCBs]MO AVG report only Mar, Jun, Aug, Dec
601Polychlorinated biphenyls [PCBs]DAILY MX report only Mar, Jun, Aug, Dec
601Mercury, total low levelMO AVG report only all year
601Mercury, total low levelDAILY MX report only all year
601pH, maximumDAILY MX report only all year
601pH, minimumDAILY MN report only all year
601BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
601BOD, carbonaceous [5 day, 20 C]DAILY MX report only all year
602Solids, total suspendedMO AVG report only all year
602Solids, total suspendedDAILY MX report only all year
602Bypass VolumeMO AVG report only all year
602Bypass VolumeDAILY MX report only all year
602BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
602BOD, carbonaceous [5 day, 20 C]DAILY MX report only all year
602Bypass valveMO AVG report only all year
602Bypass valveDAILY MX report only all year
602Bypass of treatmentMO AVG report only all year
602Bypass of treatmentDAILY MX report only all year
610Flow, in conduit or thru treatment plantMO AVG report only all year
610Flow, in conduit or thru treatment plantDAILY MX report only all year
610Mercury, total low levelDAILY MX report only all year
801Nitrogen, ammonia total [as N]MO AVG report only May, Jun, Jul, Aug, Sep, Oct
801Nitrogen, ammonia total [as N]DAILY MX report only May, Jun, Jul, Aug, Sep, Oct
801Nitrogen, Kjeldahl, total [as N]MO AVG report only May, Jun, Jul, Aug, Sep, Oct
801Nitrogen, Kjeldahl, total [as N]DAILY MX report only May, Jun, Jul, Aug, Sep, Oct
801Nitrite + Nitrate total [as N]MO AVG report only May, Jun, Jul, Aug, Sep, Oct
801Nitrite + Nitrate total [as N]DAILY MX report only May, Jun, Jul, Aug, Sep, Oct
801Phosphorus, total [as P]MO AVG report only May, Jun, Jul, Aug, Sep, Oct
801Phosphorus, total [as P]DAILY MX report only May, Jun, Jul, Aug, Sep, Oct
801E. coli, MTEC-MFMO GEOMN report only May, Jun, Jul, Aug, Sep, Oct
801E. coli, MTEC-MFDAILY MX report only May, Jun, Jul, Aug, Sep, Oct
801%Effect Static Renewal 48Hr Acute Ceriodaphnia dubiaMO AVG report only Aug
801%Effect Static Renewal 48Hr Acute Ceriodaphnia dubiaDAILY MX report only Aug
801%Effect Static Renewal 96Hr Acute Pimephales promelasMO AVG report only Aug
801%Effect Static Renewal 96Hr Acute Pimephales promelasDAILY MX report only Aug
901Temperature, water deg. centigradeMO AVG report only May, Jun, Jul, Aug, Sep, Oct
901Temperature, water deg. centigradeDAILY MX report only May, Jun, Jul, Aug, Sep, Oct
901Oxygen, dissolved [DO]DAILY MN report only May, Jun, Jul, Aug, Sep, Oct
901pHDAILY MN report only May, Jun, Jul, Aug, Sep, Oct
901pHDAILY MX report only May, Jun, Jul, Aug, Sep, Oct
901Nitrogen, ammonia total [as N]MO AVG report only May, Jun, Jul, Aug, Sep, Oct
901Nitrogen, ammonia total [as N]DAILY MX report only May, Jun, Jul, Aug, Sep, Oct
901Nitrogen, Kjeldahl, total [as N]MO AVG report only May, Jun, Jul, Aug, Sep, Oct
901Nitrogen, Kjeldahl, total [as N]DAILY MX report only May, Jun, Jul, Aug, Sep, Oct
901Nitrite + Nitrate total [as N]MO AVG report only May, Jun, Jul, Aug, Sep, Oct
901Nitrite + Nitrate total [as N]DAILY MX report only May, Jun, Jul, Aug, Sep, Oct
901Phosphorus, total [as P]MO AVG report only May, Jun, Jul, Aug, Sep, Oct
901Phosphorus, total [as P]DAILY MX report only May, Jun, Jul, Aug, Sep, Oct
901Hardness, total [as CaCO3]MO AVG report only May, Jun, Jul, Aug, Sep, Oct
901Hardness, total [as CaCO3]DAILY MX report only May, Jun, Jul, Aug, Sep, Oct
901E. coli, MTEC-MFMO GEOMN report only May, Jun, Jul, Aug, Sep, Oct
901E. coli, MTEC-MFDAILY MX report only May, Jun, Jul, Aug, Sep, Oct

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states