City of Mansfield WWTP

NPDES permit OH0026328 · Major POTW · effective, expires 2030-03-31 · 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

8values over a limit
0required values missing, on 0 form(s)
0of 94 forms filed late

Last period with anything received: 2026-07-31. Most often over: E. coli, MTEC-MF (6), pH, minimum (2).

Reporting

Reports are due about 20 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (184)

OutfallParameterStatisticLimitMonths
001Solids, total suspendedMO AVG <= 25 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Solids, total suspendedMO AVG <= 12 mg/L May, Jun, Jul, Aug, Sep, Oct
001Solids, total suspendedWKLY MAX <= 40 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Solids, total suspendedWKLY MAX <= 18 mg/L May, Jun, Jul, Aug, Sep, Oct
001Solids, total suspendedMO AVG <= 1140 kg/d Jan, Feb, Mar, Apr, Nov, Dec
001Solids, total suspendedMO AVG <= 546 kg/d May, Jun, Jul, Aug, Sep, Oct
001Solids, total suspendedWKLY MAX <= 1820 kg/d Jan, Feb, Mar, Apr, Nov, Dec
001Solids, total suspendedWKLY MAX <= 818 kg/d May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG report only all year
001Nitrogen, ammonia total [as N]DAILY MX report only all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 10 mg/L May, Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 25 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]WKLY MAX <= 15 mg/L May, Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]WKLY MAX <= 40 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 455 kg/d May, Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 1140 kg/d Jan, Feb, Mar, Apr, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]WKLY MAX <= 682 kg/d May, Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]WKLY MAX <= 1820 kg/d Jan, Feb, Mar, Apr, Nov, Dec
002Temperature, water deg. centigradeMO AVG report only all year
002Temperature, water deg. centigradeDAILY MX report only all year
002Oxygen, dissolved [DO]DAILY MN >= 5 mg/L all year
002Oil and grease, hexane extr methodDAILY MX <= 10 mg/L all year
002Nitrogen, ammonia total [as N]MO AVG <= 1.7 mg/L May, Jun, Jul, Aug, Sep, Oct
002Nitrogen, ammonia total [as N]MO AVG <= 4.4 mg/L Jan, Feb, Mar, Apr, Nov, Dec
002Nitrogen, ammonia total [as N]WKLY MAX <= 3.5 mg/L May, Jun, Jul, Aug, Sep, Oct
002Nitrogen, ammonia total [as N]WKLY MAX <= 6.6 mg/L Jan, Feb, Mar, Apr, Nov, Dec
002Nitrogen, ammonia total [as N]MO AVG <= 77.3 kg/d May, Jun, Jul, Aug, Sep, Oct
002Nitrogen, ammonia total [as N]MO AVG <= 200 kg/d Jan, Feb, Mar, Apr, Nov, Dec
002Nitrogen, ammonia total [as N]WKLY MAX <= 159 kg/d May, Jun, Jul, Aug, Sep, Oct
002Nitrogen, ammonia total [as N]WKLY MAX <= 300 kg/d Jan, Feb, Mar, Apr, Nov, Dec
002Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
002Nitrogen, Kjeldahl, total [as N]DAILY MX report only all year
002Nitrite + Nitrate total [as N]MO AVG report only all year
002Nitrite + Nitrate total [as N]DAILY MX report only all year
002Phosphorus, total [as P]MO AVG <= 1 mg/L all year
002Phosphorus, total [as P]WKLY MAX <= 1.5 mg/L all year
002Phosphorus, total [as P]MO AVG <= 45.5 kg/d all year
002Phosphorus, total [as P]WKLY MAX <= 68.2 kg/d all year
002Phosphate, ortho, dissolved [as P]MO AVG report only all year
002Phosphate, ortho, dissolved [as P]DAILY MX report only all year
002Selenium, total recoverableMO AVG report only Mar, Jun, Aug, Dec
002Selenium, total recoverableDAILY MX report only Mar, Jun, Aug, Dec
002Nickel, total recoverableMO AVG report only Mar, Jun, Aug, Dec
002Nickel, total recoverableDAILY MX report only Mar, Jun, Aug, Dec
002Zinc, total recoverableMO AVG report only Mar, Jun, Aug, Dec
002Zinc, total recoverableDAILY MX report only Mar, Jun, Aug, Dec
002Cadmium, total recoverableMO AVG report only Mar, Jun, Aug, Dec
002Cadmium, total recoverableDAILY MX report only Mar, Jun, Aug, Dec
002Lead, total recoverableMO AVG report only Mar, Jun, Aug, Dec
002Lead, total recoverableDAILY MX report only Mar, Jun, Aug, Dec
002Chromium, total recoverableMO AVG report only Mar, Jun, Aug, Dec
002Chromium, total recoverableDAILY MX report only Mar, Jun, Aug, Dec
002Copper, total recoverableMO AVG report only all year
002Copper, total recoverableDAILY MX report only all year
002Chromium, hexavalent dissolved [as Cr]MO AVG report only Mar, Jun, Aug, Dec
002Chromium, hexavalent dissolved [as Cr]DAILY MX report only Mar, Jun, Aug, Dec
002E. coli, MTEC-MFMO GEOMN <= 126 MPN/100mL May, Jun, Jul, Aug, Sep, Oct
002E. coli, MTEC-MFWK GEOMN <= 284 MPN/100mL May, Jun, Jul, Aug, Sep, Oct
002Di[2-ethylhexyl] phthalate [DEHP]MO AVG <= 5.3 ug/L all year
002Di[2-ethylhexyl] phthalate [DEHP]DAILY MX <= 1470 ug/L all year
002Di[2-ethylhexyl] phthalate [DEHP]MO AVG <= .24 kg/d all year
002Di[2-ethylhexyl] phthalate [DEHP]DAILY MX <= 66.8 kg/d all year
002Flow, in conduit or thru treatment plantMO AVG report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
002Chlorine, total residualMO AVG <= .014 mg/L May, Jun, Jul, Aug, Sep, Oct
002Chlorine, total residualDAILY MX <= .023 mg/L May, Jun, Jul, Aug, Sep, Oct
002Mercury, total low levelMO AVG report only all year
002Mercury, total low levelDAILY MX report only all year
002Cyanide, free availableMO AVG report only all year
002Cyanide, free availableDAILY MX report only all year
002Toxicity [acute], Ceriodaphnia dubiaMO AVG report only Feb, Aug
002Toxicity [acute], Ceriodaphnia dubiaDAILY MX report only Feb, Aug
002Toxicity [chronic], Ceriodaphnia dubiaMO AVG report only Feb, Aug
002Toxicity [chronic], Ceriodaphnia dubiaDAILY MX report only Feb, Aug
002Toxicity [acute], Pimephales promelas [Fathead Minnow]MO AVG report only Feb, May, Aug, Nov
002Toxicity [acute], Pimephales promelas [Fathead Minnow]DAILY MX report only Feb, May, Aug, Nov
002Toxicity [chronic], Pimephales promelas [Fathead Minnow]MO AVG report only Feb, May, Aug, Nov
002Toxicity [chronic], Pimephales promelas [Fathead Minnow]DAILY MX report only Feb, May, Aug, Nov
002pH, maximumDAILY MX <= 9 SU all year
002pH, minimumDAILY MN >= 6.5 SU all year
002Solids, total dissolved- 180 deg. CMO AVG report only all year
002Solids, total dissolved- 180 deg. CDAILY MX report only all year
300OverflowsMO AVG report only all year
300OverflowsDAILY MX report only all year
581Nitrogen, ammonia in bottom depositsMO AVG report only Mar, Jun, Sep, Dec
581Nitrogen, ammonia in bottom depositsDAILY MX report only Mar, Jun, Sep, Dec
581Nitrogen, Kjeldahl, total [as N]MO AVG report only Mar, Jun, Sep, Dec
581Nitrogen, Kjeldahl, total [as N]DAILY MX report only Mar, Jun, Sep, Dec
581Phosphorous, total, in bottom depositsMO AVG report only Mar, Jun, Sep, Dec
581Phosphorous, total, in bottom depositsDAILY MX report only Mar, Jun, Sep, Dec
581Potassium, in bottom depositsMO AVG report only Mar, Jun, Sep, Dec
581Potassium, in bottom depositsDAILY MX report only Mar, Jun, Sep, Dec
581Arsenic, dry weightDAILY MX <= 75 mg/kg Mar, Jun, Sep, Dec
581Cadmium, in bottom deposits [dry wgt]DAILY MX <= 85 mg/kg Mar, Jun, Sep, Dec
581Copper in bottom deposits [dry wgt]DAILY MX <= 4300 mg/kg Mar, Jun, Sep, Dec
581Lead, total dry weight [as Pb]DAILY MX <= 840 mg/kg Mar, Jun, Sep, Dec
581Nickel, tot in bottom deposits [dry wgt]DAILY MX <= 420 mg/kg Mar, Jun, Sep, Dec
581Zinc in bottom deposits [dry wgt]DAILY MX <= 7500 mg/kg Mar, Jun, Sep, Dec
581Selenium, dry weightDAILY MX <= 100 mg/kg Mar, Jun, Sep, Dec
581Fecal coliformDAILY MX <= 2000000 MPN/g Mar, Jun, Sep, Dec
581Biosolids weight indluding admixturesMO AVG report only Mar, Jun, Sep, Dec
581Biosolids weight indluding admixturesDAILY MX report only Mar, Jun, Sep, Dec
581Sludge weight, dryMO AVG report only Mar, Jun, Sep, Dec
581Sludge weight, dryDAILY MX report only Mar, Jun, Sep, Dec
581Mercury, tot in bot deposits [dry wgt]DAILY MX <= 57 mg/kg Mar, Jun, Sep, Dec
581Molybdenum, sludge, total, dry weight [as Mo]DAILY MX <= 75 mg/kg Mar, Jun, Sep, Dec
586Biosolids weight indluding admixturesMO AVG report only Dec
586Biosolids weight indluding admixturesDAILY MX report only Dec
588Sludge weight, dryMO AVG report only Dec
588Sludge weight, dryDAILY 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
601Nickel, total recoverableMO AVG report only Mar, Jun, Aug, Dec
601Nickel, total recoverableDAILY MX report only Mar, Jun, Aug, Dec
601Zinc, total recoverableMO AVG report only Mar, Jun, Aug, Dec
601Zinc, total recoverableDAILY MX report only Mar, Jun, Aug, Dec
601Cadmium, total recoverableMO AVG report only Mar, Jun, Aug, Dec
601Cadmium, total recoverableDAILY MX report only Mar, Jun, Aug, Dec
601Lead, total recoverableMO AVG report only Mar, Jun, Aug, Dec
601Lead, total recoverableDAILY MX report only Mar, Jun, Aug, Dec
601Chromium, total recoverableMO AVG report only Mar, Jun, Aug, Dec
601Chromium, total recoverableDAILY MX report only Mar, Jun, Aug, Dec
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 Mar, Jun, Aug, Dec
601Chromium, hexavalent dissolved [as Cr]DAILY MX report only Mar, Jun, Aug, Dec
601Di[2-ethylhexyl] phthalate [DEHP]MO AVG report only all year
601Di[2-ethylhexyl] phthalate [DEHP]DAILY MX report only all year
601Mercury, total low levelMO AVG report only Mar, Jun, Aug, Dec
601Mercury, total low levelDAILY MX report only Mar, Jun, Aug, Dec
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 suspendedWKLY MAX report only all year
602Phosphorus, total [as P]MO AVG report only all year
602Phosphorus, total [as P]DAILY 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]WKLY MAX report only all year
602Bypass valveMO AVG report only all year
602Bypass valveDAILY MX report only all year
603Flow, in conduit or thru treatment plantMO AVG report only all year
603Flow, in conduit or thru treatment plantDAILY MX report only all year
801Nitrogen, ammonia total [as N]MO AVG report only all year
801Nitrogen, ammonia total [as N]DAILY MX report only all year
801Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
801Nitrogen, Kjeldahl, total [as N]DAILY MX report only all year
801Nitrite + Nitrate total [as N]MO AVG report only all year
801Nitrite + Nitrate total [as N]DAILY MX report only all year
801Phosphorus, total [as P]MO AVG report only all year
801Phosphorus, total [as P]DAILY MX report only all year
801E. coli, MTEC-MFMO GEOMN report only Jun, Jul, Aug
801E. coli, MTEC-MFDAILY MX report only Jun, Jul, Aug
801%Effect Static Renewal 48Hr Acute Ceriodaphnia dubiaMO AVG report only Feb, Aug
801%Effect Static Renewal 48Hr Acute Ceriodaphnia dubiaDAILY MX report only Feb, Aug
801%Effect Static Renewal 96Hr Acute Pimephales promelasMO AVG report only Feb, May, Aug, Nov
801%Effect Static Renewal 96Hr Acute Pimephales promelasDAILY MX report only Feb, May, Aug, Nov
801%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubiaMO AVG report only Feb, Aug
801%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubiaDAILY MX report only Feb, Aug
801%Effect Static Renewal 7Day Chronic Pimephales promelasMO AVG report only Feb, May, Aug, Nov
801%Effect Static Renewal 7Day Chronic Pimephales promelasDAILY MX report only Feb, May, Aug, Nov
901Temperature, water deg. centigradeMO AVG report only all year
901Temperature, water deg. centigradeDAILY MX report only all year
901pHDAILY MN report only all year
901pHDAILY MX report only all year
901Nitrogen, ammonia total [as N]MO AVG report only all year
901Nitrogen, ammonia total [as N]DAILY MX report only all year
901Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
901Nitrogen, Kjeldahl, total [as N]DAILY MX report only all year
901Nitrite + Nitrate total [as N]MO AVG report only all year
901Nitrite + Nitrate total [as N]DAILY MX report only all year
901Phosphorus, total [as P]MO AVG report only all year
901Phosphorus, total [as P]DAILY MX report only all year
901Hardness, total [as CaCO3]MO AVG report only all year
901Hardness, total [as CaCO3]DAILY MX report only all year
901E. coli, MTEC-MFMO GEOMN report only Jun, Jul, Aug
901E. coli, MTEC-MFDAILY MX report only Jun, Jul, Aug

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