Delaware, City of

NPDES permit OH0024911 · Major POTW · effective, expires 2028-03-31 · 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

0values over a limit
0required values missing, on 0 form(s)
0of 68 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 (152)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeMO AVG report only all year
001Temperature, water deg. centigradeDAILY MX report only all year
001Oxygen, dissolved [DO]DAILY MN >= 7 mg/L all year
001Solids, total suspendedMO AVG <= 14 mg/L May, Jun, Jul, Aug, Sep, Oct
001Solids, total suspendedMO AVG <= 25 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Solids, total suspendedWKLY MAX <= 21 mg/L May, Jun, Jul, Aug, Sep, Oct
001Solids, total suspendedWKLY MAX <= 37 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Solids, total suspendedMO AVG <= 530 kg/d May, Jun, Jul, Aug, Sep, Oct
001Solids, total suspendedMO AVG <= 946 kg/d Jan, Feb, Mar, Apr, Nov, Dec
001Solids, total suspendedWKLY MAX <= 795 kg/d May, Jun, Jul, Aug, Sep, Oct
001Solids, total suspendedWKLY MAX <= 1401 kg/d Jan, Feb, Mar, Apr, Nov, Dec
001Oil and grease, hexane extr methodDAILY MX <= 10 mg/L all year
001Nitrogen, ammonia total [as N]MO AVG <= .75 mg/L May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG <= 2.83 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia total [as N]WKLY MAX <= 1.12 mg/L May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]WKLY MAX <= 4.25 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 28 kg/d May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG <= 108 kg/d Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia total [as N]WKLY MAX <= 42 kg/d May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]WKLY MAX <= 161 kg/d Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
001Nitrogen, Kjeldahl, total [as N]DAILY MX report only all year
001Nitrogen, inorganic totalMO AVG <= 6.3 mg/L May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, inorganic totalMO AVG <= 8.1 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, inorganic totalWKLY MAX <= 9.5 mg/L May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, inorganic totalWKLY MAX <= 12.2 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, inorganic totalMO AVG <= 238 kg/d May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, inorganic totalMO AVG <= 307 kg/d Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, inorganic totalWKLY MAX <= 358 kg/d May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, inorganic totalWKLY MAX <= 460 kg/d Jan, Feb, Mar, Apr, Nov, Dec
001Phosphorus, total [as P]MO AVG <= 1 mg/L all year
001Phosphorus, total [as P]WKLY MAX <= 1.5 mg/L all year
001Phosphorus, total [as P]MO AVG <= 38 kg/d all year
001Phosphorus, total [as P]WKLY MAX <= 57 kg/d all year
001Phosphate, ortho, dissolved [as P]MO AVG report only all year
001Phosphate, ortho, dissolved [as P]DAILY MX report only all year
001Selenium, total recoverableMO AVG report only all year
001Selenium, total recoverableDAILY MX report only all year
001Nickel, total recoverableMO AVG report only all year
001Nickel, total recoverableDAILY MX report only all year
001Zinc, total recoverableMO AVG report only all year
001Zinc, total recoverableDAILY MX report only all year
001Cadmium, total recoverableMO AVG report only all year
001Cadmium, total recoverableDAILY MX report only all year
001Lead, total recoverableMO AVG report only all year
001Lead, total recoverableDAILY MX report only all year
001Chromium, total recoverableMO AVG report only all year
001Chromium, total recoverableDAILY MX report only all year
001Copper, total recoverableMO AVG report only all year
001Copper, total recoverableDAILY MX report only all year
001Chromium, hexavalent dissolved [as Cr]MO AVG report only all year
001Chromium, hexavalent dissolved [as Cr]DAILY MX report only all year
001E. coli, MTEC-MFMO GEOMN <= 126 MPN/100mL May, Jun, Jul, Aug, Sep, Oct
001E. coli, MTEC-MFWK GEOMN <= 284 MPN/100mL May, Jun, Jul, Aug, Sep, Oct
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Mercury, total low levelMO AVG report only all year
001Mercury, total low levelDAILY MX report only all year
001Cyanide, free availableMO AVG report only all year
001Cyanide, free availableDAILY MX report only all year
001Toxicity [acute], Ceriodaphnia dubiaMO AVG report only Sep
001Toxicity [acute], Ceriodaphnia dubiaDAILY MX report only Sep
001Toxicity [chronic], Ceriodaphnia dubiaMO AVG report only Sep
001Toxicity [chronic], Ceriodaphnia dubiaDAILY MX report only Sep
001Toxicity [acute], Pimephales promelas [Fathead Minnow]MO AVG report only Sep
001Toxicity [acute], Pimephales promelas [Fathead Minnow]DAILY MX report only Sep
001Toxicity [chronic], Pimephales promelas [Fathead Minnow]MO AVG report only Sep
001Toxicity [chronic], Pimephales promelas [Fathead Minnow]DAILY MX report only Sep
001pH, maximumDAILY MX <= 9 SU all year
001pH, minimumDAILY MN >= 6.5 SU all year
001Solids, total dissolved- 180 deg. CMO AVG report only all year
001Solids, total dissolved- 180 deg. CDAILY 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 <= 18 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 <= 27 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 379 kg/d May, Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 681 kg/d Jan, Feb, Mar, Apr, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]WKLY MAX <= 568 kg/d May, Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]WKLY MAX <= 1022 kg/d Jan, Feb, Mar, Apr, Nov, Dec
300OverflowsMO AVG report only all year
300OverflowsDAILY MX report only all year
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
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
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
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
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 Sep
801%Effect Static Renewal 48Hr Acute Ceriodaphnia dubiaDAILY MX report only Sep
801%Effect Static Renewal 96Hr Acute Pimephales promelasMO AVG report only Sep
801%Effect Static Renewal 96Hr Acute Pimephales promelasDAILY MX report only Sep
801%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubiaMO AVG report only Sep
801%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubiaDAILY MX report only Sep
801%Effect Static Renewal 7Day Chronic Pimephales promelasMO AVG report only Sep
801%Effect Static Renewal 7Day Chronic Pimephales promelasDAILY MX report only Sep
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
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

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