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NPDES permit IN0025577 · Major POTW · effective, expires 2030-02-28 · 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
3required values missing, on 1 form(s)
7of 29 forms filed late

Last period with anything received: 2026-07-31. Most often over: Nitrogen, ammonia total [as N] (6), E. coli, colony forming units [CFU] (2).

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 (85)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]DLYAVMIN >= 6 mg/L all year
001pHDAILY MN >= 6 SU all year
001pHDAILY MX <= 9 SU all year
001Solids, total suspendedMO AVG <= 30 mg/L Jan, Feb, Mar, Apr, Dec
001Solids, total suspendedMO AVG <= 24 mg/L May, Jun, Jul, Aug, Sep, Oct, Nov
001Solids, total suspendedMX WK AV <= 45 mg/L Jan, Feb, Mar, Apr, Dec
001Solids, total suspendedMX WK AV <= 36 mg/L May, Jun, Jul, Aug, Sep, Oct, Nov
001Solids, total suspendedMO AVG <= 2504 lb/d Jan, Feb, Mar, Apr, Dec
001Solids, total suspendedMO AVG <= 2003 lb/d May, Jun, Jul, Aug, Sep, Oct, Nov
001Solids, total suspendedMX WK AV <= 3755 lb/d Jan, Feb, Mar, Apr, Dec
001Solids, total suspendedMX WK AV <= 3004 lb/d May, Jun, Jul, Aug, Sep, Oct, Nov
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 <= 1.6 mg/L May, Jun, Jul, Aug, Sep, Oct, Nov
001Nitrogen, ammonia total [as N]MO AVG <= 1.8 mg/L Jan, Feb, Mar, Apr, Dec
001Nitrogen, ammonia total [as N]MX WK AV <= 2.4 mg/L May, Jun, Jul, Aug, Sep, Oct, Nov
001Nitrogen, ammonia total [as N]MX WK AV <= 2.7 mg/L Jan, Feb, Mar, Apr, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 134 lb/d May, Jun, Jul, Aug, Sep, Oct, Nov
001Nitrogen, ammonia total [as N]MO AVG <= 150 lb/d Jan, Feb, Mar, Apr, Dec
001Nitrogen, ammonia total [as N]MX WK AV <= 200 lb/d May, Jun, Jul, Aug, Sep, Oct, Nov
001Nitrogen, ammonia total [as N]MX WK AV <= 225 lb/d Jan, Feb, Mar, Apr, Dec
001Phosphorus, total [as P]MO AVG <= 1 mg/L all year
001Phosphorus, total [as P]MO AVG report only all year
001Cyanide, free [as free]MO AVG <= .0043 mg/L all year
001Cyanide, free [as free]DAILY MX <= .0085 mg/L all year
001Cyanide, free [as free]MO AVG report only all year
001Cyanide, free [as free]DAILY MX report only all year
001Nickel, total recoverableQB report only Mar, Jun, Sep, Dec
001Nickel, total recoverableQB report only Mar, Jun, Sep, Dec
001Nickel, total recoverableQB report only Mar, Jun, Sep, Dec
001Nickel, total recoverableQB report only Mar, Jun, Sep, Dec
001Silver total recoverableQB report only Mar, Jun, Sep, Dec
001Silver total recoverableQB report only Mar, Jun, Sep, Dec
001Silver total recoverableQB report only Mar, Jun, Sep, Dec
001Silver total recoverableQB report only Mar, Jun, Sep, Dec
001Zinc, total recoverableQB report only Mar, Jun, Sep, Dec
001Zinc, total recoverableQB report only Mar, Jun, Sep, Dec
001Zinc, total recoverableQB report only Mar, Jun, Sep, Dec
001Zinc, total recoverableQB report only Mar, Jun, Sep, Dec
001Cadmium, total recoverableQB report only Mar, Jun, Sep, Dec
001Cadmium, total recoverableQB report only Mar, Jun, Sep, Dec
001Cadmium, total recoverableQB report only Mar, Jun, Sep, Dec
001Cadmium, total recoverableQB report only Mar, Jun, Sep, Dec
001Lead, total recoverableQB report only Mar, Jun, Sep, Dec
001Lead, total recoverableQB report only Mar, Jun, Sep, Dec
001Lead, total recoverableQB report only Mar, Jun, Sep, Dec
001Lead, total recoverableQB report only Mar, Jun, Sep, Dec
001Chromium, total recoverableQB report only Mar, Jun, Sep, Dec
001Chromium, total recoverableQB report only Mar, Jun, Sep, Dec
001Chromium, total recoverableQB report only Mar, Jun, Sep, Dec
001Chromium, total recoverableQB report only Mar, Jun, Sep, Dec
001Copper, total recoverableQB report only Mar, Jun, Sep, Dec
001Copper, total recoverableQB report only Mar, Jun, Sep, Dec
001Copper, total recoverableQB report only Mar, Jun, Sep, Dec
001Copper, total recoverableQB report only Mar, Jun, Sep, Dec
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Chlorine, total residualMO AVG <= .06 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct
001Chlorine, total residualDAILY MX <= .06 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct
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) Feb, Aug
001Toxicity [acute], Ceriodaphnia dubiaMAXIMUM <= 1 tox acute (alert) Mar, Sep
001Toxicity [acute], Ceriodaphnia dubiaMAXIMUM <= 1 tox acute (alert) Mar, Sep
001Toxicity [chronic], Ceriodaphnia dubiaMAXIMUM <= 1 tox chronic (alert) Feb, Aug
001Toxicity [chronic], Ceriodaphnia dubiaMAXIMUM <= 1 tox chronic (alert) Mar, Sep
001Toxicity [chronic], Ceriodaphnia dubiaMAXIMUM <= 1 tox chronic (alert) Mar, Sep
001Toxicity [acute], Pimephales promelas [Fathead Minnow]MAXIMUM <= 1 tox acute (alert) Feb, Aug
001Toxicity [acute], Pimephales promelas [Fathead Minnow]MAXIMUM <= 1 tox acute (alert) Mar, Sep
001Toxicity [acute], Pimephales promelas [Fathead Minnow]MAXIMUM <= 1 tox acute (alert) Mar, Sep
001Toxicity [chronic], Pimephales promelas [Fathead Minnow]MAXIMUM <= 1 tox chronic (alert) Feb, Aug
001Toxicity [chronic], Pimephales promelas [Fathead Minnow]MAXIMUM <= 1 tox chronic (alert) Mar, Sep
001Toxicity [chronic], Pimephales promelas [Fathead Minnow]MAXIMUM <= 1 tox chronic (alert) Mar, Sep
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 25 mg/L Jan, Feb, Mar, Apr, Dec
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 20 mg/L May, Jun, Jul, Aug, Sep, Oct, Nov
001BOD, carbonaceous [5 day, 20 C]MX WK AV <= 40 mg/L Jan, Feb, Mar, Apr, Dec
001BOD, carbonaceous [5 day, 20 C]MX WK AV <= 30 mg/L May, Jun, Jul, Aug, Sep, Oct, Nov
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 2086 lb/d Jan, Feb, Mar, Apr, Dec
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 1669 lb/d May, Jun, Jul, Aug, Sep, Oct, Nov
001BOD, carbonaceous [5 day, 20 C]MX WK AV <= 3338 lb/d Jan, Feb, Mar, Apr, Dec
001BOD, carbonaceous [5 day, 20 C]MX WK AV <= 2504 lb/d May, Jun, Jul, Aug, Sep, Oct, Nov
001Flow, totalMO TOTAL report only all year
002DurationMO TOTAL report only all year
002Overflow volume [SS0 volume, CSO volume]MO TOTAL report only all year
002Precipitation, monthly accumulationMO TOTAL report only all year
002Discharge event observation [Visual Monitoring]MO TOTAL report only all year

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