BLUFFTON WWTP, CITY OF

NPDES permit IN0022411 · Major POTW · effective, expires 2030-11-30 · 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

4values over a limit
0required values missing, on 0 form(s)
0of 24 forms filed late

Last period with anything received: 2026-07-31. Most often over: Solids, total suspended (2), Nitrogen, ammonia total [as N] (2).

Reporting

Reports are due about 28 days after each monitoring period ends (the most common figure among IN permits in EPA's filings — check your permit).

Limits in force (59)

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 <= 12 mg/L all year
001Solids, total suspendedWKLY AVG <= 18 mg/L all year
001Solids, total suspendedMO AVG <= 600 lb/d all year
001Solids, total suspendedWKLY AVG <= 900 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 <= 1.1 mg/L May, Jun, Jul, Aug, Sep, Oct, Nov
001Nitrogen, ammonia total [as N]MO AVG <= 1.6 mg/L Jan, Feb, Mar, Apr, Dec
001Nitrogen, ammonia total [as N]WKLY AVG <= 1.6 mg/L May, Jun, Jul, Aug, Sep, Oct, Nov
001Nitrogen, ammonia total [as N]WKLY AVG <= 2.4 mg/L Jan, Feb, Mar, Apr, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 55 lb/d May, Jun, Jul, Aug, Sep, Oct, Nov
001Nitrogen, ammonia total [as N]MO AVG <= 80 lb/d Jan, Feb, Mar, Apr, Dec
001Nitrogen, ammonia total [as N]WKLY AVG <= 80 lb/d May, Jun, Jul, Aug, Sep, Oct, Nov
001Nitrogen, ammonia total [as N]WKLY AVG <= 120 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 Nov
001Toxicity [chronic], Ceriodaphnia dubiaMAXIMUM <= 1.2 tox chronic Nov
001Toxicity [acute], Pimephales promelas [Fathead Minnow]MAXIMUM <= 1 tox acute Nov
001Toxicity [chronic], Pimephales promelas [Fathead Minnow]MAXIMUM <= 1.2 tox chronic Nov
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 10 mg/L all year
001BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 15 mg/L all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 500 lb/d all year
001BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 750 lb/d all year
001Phosphorus, total percent removalMO AV MN >= 70 % all year
001Flow, totalMO TOTAL report only all year
005pHDAILY MN report only all year
005pHDAILY MX report only all year
005Solids, total suspendedMO AVG report only all year
005Solids, total suspendedDAILY MX report only all year
005Flow, in conduit or thru treatment plantMO AVG report only all year
005Flow, in conduit or thru treatment plantMX WK AV report only all year
005Chlorine, total residualMO AVG < .06 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct
005Chlorine, total residualDAILY MX < .06 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct
005E. coli, colony forming units [CFU]MO GEO <= 125 CFU/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
005E. coli, colony forming units [CFU]DAILY MX <= 235 CFU/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
005BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
005BOD, carbonaceous [5 day, 20 C]DAILY MX report only all year
005Flow, totalMO TOTAL report only all year
PRTCopper, dry weightVALUE report only Jun, Dec
PRTCopper, dry weightVALUE report only Jun, Dec
PRTCadmium, 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
PRTMolybdenum, sludge, total, dry weight [as Mo]VALUE report only Jun, Dec
PRTZinc, sludge, total, dry weight [as Zn]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
PRTLead, sludge, total, dry weight [as Pb]VALUE report only Jun, Dec
PRTNickel, sludge, total, dry weight [as Ni]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
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