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NPDES permit IN0021016 · Major POTW · effective, expires 2030-12-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file

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

1values over a limit
0required values missing, on 0 form(s)
0of 56 forms filed late

Last period with anything received: 2026-08-31. Most often over: E. coli, colony forming units [CFU] (1).

Reporting

Reports are due about 28 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (73)

OutfallParameterStatisticLimitMonths
001pHDAILY MN >= 6 SU all year
001pHDAILY MX <= 9 SU all year
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspendedMX WK AV <= 45 mg/L all year
001Solids, total suspendedMO AVG <= 1878 lb/d all year
001Solids, total suspendedMX WK AV <= 2816 lb/d all year
001Nitrogen, total [as N]MO AVG report only all year
001Nitrogen, total [as N]MO AVG report only all year
001Nitrogen, ammonia total [as N]MO AVG <= 3 mg/L May, Jun, Jul, Aug, Sep, Oct, Nov
001Nitrogen, ammonia total [as N]MO AVG <= 9.6 mg/L Jan, Feb, Mar, Apr, Dec
001Nitrogen, ammonia total [as N]MX WK AV <= 4.5 mg/L May, Jun, Jul, Aug, Sep, Oct, Nov
001Nitrogen, ammonia total [as N]MX WK AV <= 14.4 mg/L Jan, Feb, Mar, Apr, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 190 lb/d May, Jun, Jul, Aug, Sep, Oct, Nov
001Nitrogen, ammonia total [as N]MO AVG <= 601 lb/d Jan, Feb, Mar, Apr, Dec
001Nitrogen, ammonia total [as N]MX WK AV <= 280 lb/d May, Jun, Jul, Aug, Sep, Oct, Nov
001Nitrogen, ammonia total [as N]MX WK AV <= 901 lb/d Jan, Feb, Mar, Apr, Dec
001Nitrogen, Kjeldahl, total [as N]MX WK AV report only all year
001Nitrogen, Kjeldahl, total [as N]MX WK AV report only all year
001Nitrite + Nitrate total [as N]MX WK AV report only all year
001Nitrite + Nitrate total [as N]MX WK AV report only all year
001Phosphorus, total [as P]MO AVG <= 1 mg/L all year
001Phosphorus, total [as P]MO AVG report only all year
001Nickel, total recoverableDAILY MX report only Mar, Jun, Sep, Dec
001Nickel, total recoverableDAILY MX report only Mar, Jun, Sep, Dec
001Silver total recoverableDAILY MX report only Mar, Jun, Sep, Dec
001Silver total recoverableDAILY MX report only Mar, Jun, Sep, Dec
001Zinc, total recoverableDAILY MX report only Mar, Jun, Sep, Dec
001Zinc, total recoverableDAILY MX report only Mar, Jun, Sep, Dec
001Lead, total recoverableDAILY MX report only Mar, Jun, Sep, Dec
001Lead, total recoverableDAILY MX report only Mar, Jun, Sep, Dec
001Chromium, total recoverableDAILY MX report only Mar, Jun, Sep, Dec
001Chromium, total recoverableDAILY MX report only Mar, Jun, Sep, Dec
001Copper, total recoverableDAILY MX report only Mar, Jun, Sep, Dec
001Copper, total recoverableDAILY MX report only Mar, Jun, Sep, Dec
001Phenolics, total recoverableDAILY MX report only Mar, Jun, Sep, Dec
001Phenolics, total recoverableDAILY MX report only Mar, Jun, Sep, Dec
001Flow, in conduit or thru treatment plantMO AVG report only all year
001E. coli, colony forming units [CFU]MO GEO <= 125 CFU/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
001E. coli, colony forming units [CFU]DAILY MX <= 235 CFU/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
001Toxicity [acute], Ceriodaphnia dubiaMAXIMUM <= 1 tox acute (alert) Dec
001Toxicity [acute], Ceriodaphnia dubiaMAXIMUM <= 1 tox acute (alert) Jan
001Toxicity [acute], Ceriodaphnia dubiaMAXIMUM <= 1 tox acute (alert) Jan
001Toxicity [acute], Pimephales promelas [Fathead Minnow]MAXIMUM <= 1 tox acute (alert) Dec
001Toxicity [acute], Pimephales promelas [Fathead Minnow]MAXIMUM <= 1 tox acute (alert) Jan
001Toxicity [acute], Pimephales promelas [Fathead Minnow]MAXIMUM <= 1 tox acute (alert) Jan
001Coliform, fecal generalMO GEO <= 2000 #/100mL Jan, Feb, Mar, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 25 mg/L all year
001BOD, carbonaceous [5 day, 20 C]MX WK AV <= 40 mg/L all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 1565 lb/d all year
001BOD, carbonaceous [5 day, 20 C]MX WK AV <= 2504 lb/d all year
001Flow, totalMO TOTAL report only all year
001TU Static 48Hr Acute Daphnia magnaMAXIMUM <= 1 tox acute (alert) Dec
001TU Static 48Hr Acute Daphnia magnaMAXIMUM <= 1 tox acute (alert) Jan
001TU Static 48Hr Acute Daphnia magnaMAXIMUM <= 1 tox acute (alert) Jan
003DurationMO TOTAL report only all year
003Overflow volume [SS0 volume, CSO volume]MO TOTAL report only all year
003Precipitation, monthly accumulationMO TOTAL report only all year
003Discharge event observation [Visual Monitoring]MO TOTAL report only all year
010DurationMO TOTAL report only all year
010Overflow volume [SS0 volume, CSO volume]MO TOTAL report only all year
010Precipitation, monthly accumulationMO TOTAL report only all year
010Discharge event observation [Visual Monitoring]MO TOTAL report only all year
102DurationMO TOTAL report only all year
102Overflow volume [SS0 volume, CSO volume]MO TOTAL report only all year
102Precipitation, monthly accumulationMO TOTAL report only all year
102Discharge event observation [Visual Monitoring]MO TOTAL report only all year
PRTCopper, dry weightVALUE report only Jun, Dec
PRTCadmium, dry weightVALUE report only Jun, Dec
PRTMolybdenum, sludge, total, dry weight [as Mo]VALUE report only Jun, Dec
PRTZinc, sludge, total, dry weight [as Zn]VALUE report only Jun, Dec
PRTLead, sludge, total, dry weight [as Pb]VALUE report only Jun, Dec
PRTNickel, sludge, total, dry weight [as Ni]VALUE report only Jun, Dec
PRTMercury, sludge, total, dry weight [as Hg]VALUE report only Jun, Dec

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