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NPDES permit IN0020478 · Major POTW · effective, expires 2027-02-28 · 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

3values over a limit
0required values missing, on 0 form(s)
0of 12 forms filed late

Last period with anything received: 2026-08-31. Most often over: E. coli, colony forming units [CFU] (2), Nitrogen, ammonia total [as N] (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 (47)

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 <= 18 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 <= 27 mg/L May, Jun, Jul, Aug, Sep, Oct, Nov
001Solids, total suspendedMO AVG <= 451 lb/d Jan, Feb, Mar, Apr, Dec
001Solids, total suspendedMO AVG <= 270 lb/d May, Jun, Jul, Aug, Sep, Oct, Nov
001Solids, total suspendedMX WK AV <= 676 lb/d Jan, Feb, Mar, Apr, Dec
001Solids, total suspendedMX WK AV <= 406 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 <= .94 mg/L May, Jun, Jul, Aug, Sep, Oct, Nov
001Nitrogen, ammonia total [as N]MO AVG <= 1.57 mg/L Jan, Feb, Mar, Apr, Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 2.19 mg/L May, Jun, Jul, Aug, Sep, Oct, Nov
001Nitrogen, ammonia total [as N]DAILY MX <= 3.65 mg/L Jan, Feb, Mar, Apr, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 14.1 lb/d May, Jun, Jul, Aug, Sep, Oct, Nov
001Nitrogen, ammonia total [as N]MO AVG <= 23.6 lb/d Jan, Feb, Mar, Apr, Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 32.9 lb/d May, Jun, Jul, Aug, Sep, Oct, Nov
001Nitrogen, ammonia total [as N]DAILY MX <= 54.8 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
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 Aug
001Toxicity [acute], Ceriodaphnia dubiaMAXIMUM <= 1 tox acute Sep
001Toxicity [chronic], Ceriodaphnia dubiaMAXIMUM <= 1.3 tox chronic Aug
001Toxicity [chronic], Ceriodaphnia dubiaMAXIMUM <= 1.3 tox chronic Sep
001Toxicity [acute], Pimephales promelas [Fathead Minnow]MAXIMUM <= 1 tox acute Aug
001Toxicity [acute], Pimephales promelas [Fathead Minnow]MAXIMUM <= 1 tox acute Sep
001Toxicity [chronic], Pimephales promelas [Fathead Minnow]MAXIMUM <= 1.3 tox chronic Aug
001Toxicity [chronic], Pimephales promelas [Fathead Minnow]MAXIMUM <= 1.3 tox chronic Sep
001Mercury, total recoverableANNL AVG <= 8 ng/L Feb, Apr, Jun, Aug, Oct, Dec
001Mercury, total recoverableDAILY MX report only Feb, Apr, Jun, Aug, Oct, Dec
001Mercury, total recoverableDAILY MX report only Feb, Apr, Jun, Aug, Oct, Dec
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 25 mg/L Jan, Feb, Mar, Apr, Dec
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 15 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 <= 23 mg/L May, Jun, Jul, Aug, Sep, Oct, Nov
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 376 lb/d Jan, Feb, Mar, Apr, Dec
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 225 lb/d May, Jun, Jul, Aug, Sep, Oct, Nov
001BOD, carbonaceous [5 day, 20 C]MX WK AV <= 601 lb/d Jan, Feb, Mar, Apr, Dec
001BOD, carbonaceous [5 day, 20 C]MX WK AV <= 345 lb/d May, Jun, Jul, Aug, Sep, Oct, Nov
001Phosphorus, total percent removalMO AV MN >= 80 % all year
001Flow, totalMO TOTAL 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