PERU UTILITIES-GRISSOM DIVISION WWTP

NPDES permit IN0024902 · Major POTW · effective, expires 2029-12-31 · 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

1values over a limit
0required values missing, on 0 form(s)
0of 13 forms filed late

Last period with anything received: 2026-07-31. Most often over: Nitrogen, ammonia total [as N] (1).

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 (38)

OutfallParameterStatisticLimitMonths
004Oxygen, dissolved [DO]DLYAVMIN >= 6 mg/L all year
004pHDAILY MN >= 6 SU all year
004pHDAILY MX <= 9 SU all year
004Solids, total suspendedMO AVG <= 10 mg/L all year
004Solids, total suspendedMX WK AV <= 15 mg/L all year
004Solids, total suspendedMO AVG <= 217 lb/d all year
004Solids, total suspendedMX WK AV <= 325 lb/d all year
004Nitrogen, total [as N]MO AVG report only all year
004Nitrogen, total [as N]MO AVG report only all year
004Nitrogen, ammonia total [as N]MO AVG <= 1.5 mg/L May, Jun, Jul, Aug, Sep, Oct, Nov
004Nitrogen, ammonia total [as N]MO AVG <= 3 mg/L Jan, Feb, Mar, Apr, Dec
004Nitrogen, ammonia total [as N]MX WK AV <= 2.3 mg/L May, Jun, Jul, Aug, Sep, Oct, Nov
004Nitrogen, ammonia total [as N]MX WK AV <= 4.5 mg/L Jan, Feb, Mar, Apr, Dec
004Nitrogen, ammonia total [as N]MO AVG <= 32.5 lb/d May, Jun, Jul, Aug, Sep, Oct, Nov
004Nitrogen, ammonia total [as N]MO AVG <= 65.1 lb/d Jan, Feb, Mar, Apr, Dec
004Nitrogen, ammonia total [as N]MX WK AV <= 49.9 lb/d May, Jun, Jul, Aug, Sep, Oct, Nov
004Nitrogen, ammonia total [as N]MX WK AV <= 97.6 lb/d Jan, Feb, Mar, Apr, Dec
004Phosphorus, total [as P]MO AVG <= 1 mg/L all year
004Phosphorus, total [as P]MO AVG report only all year
004Flow, in conduit or thru treatment plantMO AVG report only all year
004E. coli, colony forming units [CFU]MO GEO <= 125 CFU/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
004E. coli, colony forming units [CFU]DAILY MX <= 235 CFU/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
004Toxicity [acute], Ceriodaphnia dubiaMAXIMUM <= 1 tox acute Jun
004Toxicity [chronic], Ceriodaphnia dubiaMAXIMUM <= 1 tox chronic Jun
004Toxicity [acute], Pimephales promelas [Fathead Minnow]MAXIMUM <= 1 tox acute Jun
004Toxicity [chronic], Pimephales promelas [Fathead Minnow]MAXIMUM <= 1 tox chronic Jun
004BOD, carbonaceous [5 day, 20 C]MO AVG <= 10 mg/L all year
004BOD, carbonaceous [5 day, 20 C]MX WK AV <= 15 mg/L all year
004BOD, carbonaceous [5 day, 20 C]MO AVG <= 217 lb/d all year
004BOD, carbonaceous [5 day, 20 C]MX WK AV <= 325 lb/d all year
004Flow, totalMO 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