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South Whitley WWTP

Sewage treatment plant, South Whitley, Indiana. NPDES permit IN0020567, in force until Jun 30, 2028. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form A monthly (22 values), outfall 004 form CP monthly (13 values), outfall 005 form C monthly (4 values)
Renewal application due
Jan 2, 2028 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 38 reports late

Limits in force (54)

ParameterStatisticLimitMonthsOutfall
pHdaily minimum≥ 6 SUall year001
pHdaily maximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 30 mg/Lall year001
Solids, total suspendedmaximum weekly average≤ 45 mg/Lall year001
Solids, total suspendedmonthly average≤ 112.7 lb/dall year001
Solids, total suspendedmaximum weekly average≤ 169 lb/dall year001
Nitrogen, ammonia total [as N]monthly average≤ 10.2 mg/Lall year001
Nitrogen, ammonia total [as N]maximum weekly average≤ 15.3 mg/Lall year001
Nitrogen, ammonia total [as N]monthly average≤ 38.3 lb/dall year001
Nitrogen, ammonia total [as N]maximum weekly average≤ 57.5 lb/dall year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Chlorine, total residualmonthly average< .06 mg/LApr–Oct001
Chlorine, total residualdaily maximum< .06 mg/LApr–Oct001
Chlorine, total residualdaily minimum≥ .5 mg/LApr–Oct001
Chlorine, total residualdaily maximumreport only (mg/L)Apr–Oct001
E. coli, colony forming units [CFU]monthly geometric mean≤ 125 CFU/100mLApr–Oct001
E. coli, colony forming units [CFU]daily maximum≤ 235 CFU/100mLApr–Oct001
Toxicity [acute], Ceriodaphnia dubiamaximum≤ 1 tox acuteJan001
Toxicity [acute], Ceriodaphnia dubiamaximum≤ 1 tox acuteDec001
Toxicity [chronic], Ceriodaphnia dubiamaximum≤ 10.3 tox chronicJan001
Toxicity [chronic], Ceriodaphnia dubiamaximum≤ 10.3 tox chronicDec001
Toxicity [acute], Pimephales promelas [Fathead Minnow]maximum≤ 1 tox acuteJan001
Toxicity [acute], Pimephales promelas [Fathead Minnow]maximum≤ 1 tox acuteDec001
Toxicity [chronic], Pimephales promelas [Fathead Minnow]maximum≤ 10.3 tox chronicJan001
Toxicity [chronic], Pimephales promelas [Fathead Minnow]maximum≤ 10.3 tox chronicDec001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 40 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 93.9 lb/dall year001
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 150.2 lb/dall year001
Flow, totalmonthly totalreport only (Mgal/mo)all year001
pHdaily minimumreport only (SU)all year004
pHdaily maximumreport only (SU)all year004
Solids, total suspendedmonthly averagereport only (mg/L)all year004
Solids, total suspendeddaily maximumreport only (mg/L)all year004
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year004
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year004
Chlorine, total residualmonthly average< .06 mg/LApr–Oct004
Chlorine, total residualdaily maximum< .06 mg/LApr–Oct004
E. coli, colony forming units [CFU]monthly geometric mean≤ 125 CFU/100mLApr–Oct004
E. coli, colony forming units [CFU]daily maximum≤ 235 CFU/100mLApr–Oct004
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all year004
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (mg/L)all year004
Flow, totalmonthly totalreport only (Mgal/mo)all year004
Durationmonthly totalreport only (hr/mo)all year005
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (Mgal)all year005
Precipitation, monthly accumulationmonthly totalreport only (in/mo)all year005
Discharge event observation [Visual Monitoring]monthly totalreport only (#/mo)all year005
Copper, dry weightvaluereport only (mg/kg)Jun, DecPRT
Cadmium, dry weightvaluereport only (mg/kg)Jun, DecPRT
Molybdenum, sludge, total, dry weight [as Mo]valuereport only (mg/kg)Jun, DecPRT
Zinc, sludge, total, dry weight [as Zn]valuereport only (mg/kg)Jun, DecPRT
Lead, sludge, total, dry weight [as Pb]valuereport only (mg/kg)Jun, DecPRT
Nickel, sludge, total, dry weight [as Ni]valuereport only (mg/kg)Jun, DecPRT
Mercury, sludge, total, dry weight [as Hg]valuereport only (mg/kg)Jun, DecPRT

How strict are these limits?

Cited limits by parameter: Indiana's rules and the federal ones.

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/IN0020567 · MCP: https://passage-data.com/mcp