IPL Dayton Inc.

NPDES permit OH0140929 · Minor NON-POTW · effective, expires 2029-01-31 · 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

2values over a limit
0required values missing, on 0 form(s)
0of 37 forms filed late

Last period with anything received: 2026-07-31. Most often over: BOD, carbonaceous [5 day, 20 C] (2).

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 (57)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeMO AVG report only all year
001Temperature, water deg. centigradeDAILY MX report only all year
001Flow rateMO AVG report only all year
001Flow rateDAILY MX report only all year
001Oxygen, dissolved [DO]DAILY MN >= 7 mg/L Mar, Jun, Aug, Dec
001pHDAILY MN >= 6.5 SU Mar, Jun, Aug, Dec
001pHDAILY MX <= 9 SU Mar, Jun, Aug, Dec
001Solids, total suspendedMO AVG <= 12 mg/L Mar, Jun, Aug, Dec
001Solids, total suspendedWKLY MAX <= 18 mg/L Mar, Jun, Aug, Dec
001Solids, total suspendedMO AVG <= .182 kg/d Mar, Jun, Aug, Dec
001Solids, total suspendedWKLY MAX <= .273 kg/d Mar, Jun, Aug, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 3 mg/L Mar, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 1 mg/L Jun, Aug
001Nitrogen, ammonia total [as N]WKLY MAX <= 4.5 mg/L Mar, Dec
001Nitrogen, ammonia total [as N]WKLY MAX <= 1.5 mg/L Jun, Aug
001Nitrogen, ammonia total [as N]MO AVG <= .0455 kg/d Mar, Dec
001Nitrogen, ammonia total [as N]MO AVG <= .0152 kg/d Jun, Aug
001Nitrogen, ammonia total [as N]WKLY MAX <= .0682 kg/d Mar, Dec
001Nitrogen, ammonia total [as N]WKLY MAX <= .0228 kg/d Jun, Aug
001Turbidity [severity]MO AVG report only all year
001Turbidity [severity]DAILY MX report only all year
001E. coli, MTEC-MFMO GEOMN <= 126 MPN/100mL Jun, Aug
001E. coli, MTEC-MFWK GEOMN <= 284 MPN/100mL Jun, Aug
001Chlorine, total residualDAILY MX <= .019 mg/L Jun, Aug
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 10 mg/L Mar, Jun, Aug, Dec
001BOD, carbonaceous [5 day, 20 C]WKLY MAX <= 15 mg/L Mar, Jun, Aug, Dec
001BOD, carbonaceous [5 day, 20 C]MO AVG <= .152 kg/d Mar, Jun, Aug, Dec
001BOD, carbonaceous [5 day, 20 C]WKLY MAX <= .228 kg/d Mar, Jun, Aug, Dec
002Temperature, water deg. centigradeMO AVG report only all year
002Temperature, water deg. centigradeDAILY MX report only all year
002Flow rateMO AVG report only all year
002Flow rateDAILY MX report only all year
002pHDAILY MN >= 6.5 SU all year
002pHDAILY MX <= 9 SU all year
002Residue, tot fltrble [dried at 105 C]MO AVG <= 1500 mg/L all year
002Residue, tot fltrble [dried at 105 C]MO AVG <= 34.1 kg/d all year
002Solids, total suspendedMO AVG report only all year
002Solids, total suspendedDAILY MX report only all year
002Oil and grease, hexane extr methodMO AVG report only all year
002Oil and grease, hexane extr methodDAILY MX report only all year
002Phosphorus, total [as P]MO AVG report only all year
002Phosphorus, total [as P]DAILY MX report only all year
002Zinc, total recoverableMO AVG report only all year
002Zinc, total recoverableDAILY MX report only all year
002Copper, total recoverableMO AVG report only all year
002Copper, total recoverableDAILY MX report only all year
002Oxidants, total residualDAILY MX <= .01 mg/L all year
002RainfallMO AVG report only all year
002RainfallDAILY MX report only all year
003Oil & grease severityMO AVG report only Mar, Jun, Aug, Dec
003Oil & grease severityDAILY MX report only Mar, Jun, Aug, Dec
003Turbidity [severity]MO AVG report only Mar, Jun, Aug, Dec
003Turbidity [severity]DAILY MX report only Mar, Jun, Aug, Dec
588Sludge waste from secondary clarifiersMO AVG report only Dec
588Sludge waste from secondary clarifiersDAILY MX report only Dec
801Temperature, water deg. centigradeMO AVG report only all year
801Temperature, water deg. centigradeDAILY MX report only all year

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