Village of Columbus Grove WWTP

NPDES permit OH0024759 · Minor POTW · effective, expires 2029-03-31 · 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

69values over a limit
0required values missing, on 0 form(s)
0of 57 forms filed late

Last period with anything received: 2026-07-31. Most often over: Copper, total recoverable (24), BOD, carbonaceous [5 day, 20 C] (12), Nitrogen, ammonia total [as N] (12).

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 (93)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeMO AVG report only all year
001Temperature, water deg. centigradeDAILY MX report only all year
001Oxygen, dissolved [DO]DAILY MN >= 5 mg/L all year
001pHDAILY MN >= 6.5 SU all year
001pHDAILY MX <= 9 SU all year
001Solids, total suspendedMO AVG <= 12 mg/L all year
001Solids, total suspendedWKLY MAX <= 18 mg/L all year
001Solids, total suspendedMO AVG <= 37.3 kg/d all year
001Solids, total suspendedWKLY MAX <= 55.9 kg/d all year
001Oil and grease [soxhlet extr.] tot.DAILY MX <= 10 mg/L all year
001Nitrogen, ammonia total [as N]MO AVG <= 2 mg/L all year
001Nitrogen, ammonia total [as N]WKLY MAX <= 3 mg/L all year
001Nitrogen, ammonia total [as N]MO AVG <= 6.2 kg/d all year
001Nitrogen, ammonia total [as N]WKLY MAX <= 9.3 kg/d all year
001Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
001Nitrogen, Kjeldahl, total [as N]DAILY MX report only all year
001Nitrite + Nitrate total [as N]MO AVG report only all year
001Nitrite + Nitrate total [as N]DAILY MX report only all year
001Phosphorus, total [as P]MO AVG report only all year
001Phosphorus, total [as P]DAILY MX report only all year
001Cyanide, free-water plus wastewatersMO AVG <= .0052 mg/L all year
001Cyanide, free-water plus wastewatersDAILY MX <= .023 mg/L all year
001Cyanide, free-water plus wastewatersMO AVG <= .016 kg/d all year
001Cyanide, free-water plus wastewatersDAILY MX <= .071 kg/d all year
001Nickel, total recoverableMO AVG report only Mar, Jun, Aug, Dec
001Nickel, total recoverableDAILY MX report only Mar, Jun, Aug, Dec
001Zinc, total recoverableMO AVG <= 122 ug/L all year
001Zinc, total recoverableDAILY MX <= 124 ug/L all year
001Zinc, total recoverableMO AVG <= .38 kg/d all year
001Zinc, total recoverableDAILY MX <= .38 kg/d all year
001Cadmium, total recoverableMO AVG <= 2.5 ug/L all year
001Cadmium, total recoverableDAILY MX <= 4.7 ug/L all year
001Cadmium, total recoverableMO AVG <= .0078 kg/d all year
001Cadmium, total recoverableDAILY MX <= .015 kg/d all year
001Lead, total recoverableMO AVG report only Mar, Jun, Aug, Dec
001Lead, total recoverableDAILY MX report only Mar, Jun, Aug, Dec
001Chromium, total recoverableMO AVG report only Mar, Jun, Aug, Dec
001Chromium, total recoverableDAILY MX report only Mar, Jun, Aug, Dec
001Copper, total recoverableMO AVG <= 9.4 ug/L all year
001Copper, total recoverableDAILY MX <= 15 ug/L all year
001Copper, total recoverableMO AVG <= .029 kg/d all year
001Copper, total recoverableDAILY MX <= .047 kg/d all year
001Chromium, hexavalent dissolved [as Cr]MO AVG <= 11 ug/L all year
001Chromium, hexavalent dissolved [as Cr]DAILY MX <= 17 ug/L all year
001Chromium, hexavalent dissolved [as Cr]MO AVG <= .034 kg/d all year
001Chromium, hexavalent dissolved [as Cr]DAILY MX <= .053 kg/d all year
001E. coli, MTEC-MFMO GEOMN <= 126 MPN/100mL Mar, Jun, Aug, Dec
001E. coli, MTEC-MFWK GEOMN <= 284 MPN/100mL Mar, Jun, Aug, Dec
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Chlorine, total residualDAILY MX <= .019 mg/L May, Jun, Jul, Aug, Sep, Oct
001Mercury, total low levelMO AVG <= 41.9 ng/L all year
001Mercury, total low levelDAILY MX <= 1700 ng/L all year
001Mercury, total low levelMO AVG <= .00013 kg/d all year
001Mercury, total low levelDAILY MX <= .00527 kg/d 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 all year
001BOD, carbonaceous [5 day, 20 C]WKLY MAX <= 15 mg/L all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 31.1 kg/d all year
001BOD, carbonaceous [5 day, 20 C]WKLY MAX <= 46.6 kg/d all year
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 waste from secondary clarifiersMO AVG report only Dec
588Sludge waste from secondary clarifiersDAILY MX report only Dec
601pHDAILY MN report only all year
601pHDAILY MX report only all year
601Solids, total suspendedMO AVG report only all year
601Solids, total suspendedDAILY MX report only all year
601Mercury, total low levelMO AVG report only all year
601Mercury, total low levelDAILY MX 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
801Temperature, water deg. centigradeMO AVG report only all year
801Temperature, water deg. centigradeDAILY MX report only all year
801Oxygen, dissolved [DO]DAILY MN report only all year
801pHDAILY MN report only all year
801pHDAILY MX report only all year
801Nitrogen, ammonia total [as N]MO AVG report only Mar, Jun, Aug, Dec
801Nitrogen, ammonia total [as N]DAILY MX report only Mar, Jun, Aug, Dec
801E. coli, MTEC-MFMO GEOMN report only Jun, Aug
801E. coli, MTEC-MFDAILY MX report only Jun, Aug
901Temperature, water deg. centigradeMO AVG report only all year
901Temperature, water deg. centigradeDAILY MX report only all year
901Oxygen, dissolved [DO]DAILY MN 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 Mar, Jun, Aug, Dec
901Nitrogen, ammonia total [as N]DAILY MX report only Mar, Jun, Aug, Dec
901E. coli, MTEC-MFMO GEOMN report only Jun, Aug
901E. coli, MTEC-MFDAILY MX report only Jun, 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