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South Bend Municipal WWTP

Sewage treatment plant, major discharger, South Bend, Indiana. NPDES permit IN0024520, in force until Nov 30, 2026. Last 12 months: over a limit 4 times (last May 2026), 36 of 403 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form C monthly (4 values), outfall 002 form C monthly (4 values), outfall 003 form C monthly (4 values), outfall 004 form C monthly (4 values), outfall 006 form C monthly (4 values), outfall 007 form C monthly (4 values), and 31 more forms
Renewal application due
Jun 3, 2026 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 440 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period endingParameterReportedLimitOver by
January 2026Nitrogen, ammonia total [as N], daily maximum7.42 mg/L≤ 6.7 mg/L11%
May 2026Solids, total suspended, monthly average21.5 mg/L≤ 20 mg/L8%
May 2026Solids, total suspended, maximum weekly average20620 lb/d≤ 19277 lb/d7%
May 2026Solids, total suspended, maximum weekly average64.14 mg/L≤ 30 mg/L114%

Limits in force (234)

ParameterStatisticLimitMonthsOutfall
Durationmonthly totalreport only (hr/mo)all year001
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (Mgal)all year001
Precipitation, monthly accumulationmonthly totalreport only (in/mo)all year001
Discharge event observation [Visual Monitoring]monthly totalreport only (#/mo)all year001
Durationmonthly totalreport only (hr/mo)all year002
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (Mgal)all year002
Precipitation, monthly accumulationmonthly totalreport only (in/mo)all year002
Discharge event observation [Visual Monitoring]monthly totalreport only (#/mo)all year002
Durationmonthly totalreport only (hr/mo)all year003
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (Mgal)all year003
Precipitation, monthly accumulationmonthly totalreport only (in/mo)all year003
Discharge event observation [Visual Monitoring]monthly totalreport only (#/mo)all year003
Durationmonthly totalreport only (hr/mo)all year004
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (Mgal)all year004
Precipitation, monthly accumulationmonthly totalreport only (in/mo)all year004
Discharge event observation [Visual Monitoring]monthly totalreport only (#/mo)all year004
Durationmonthly totalreport only (hr/mo)all year006
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (Mgal)all year006
Precipitation, monthly accumulationmonthly totalreport only (in/mo)all year006
Discharge event observation [Visual Monitoring]monthly totalreport only (#/mo)all year006
Durationmonthly totalreport only (hr/mo)all year007
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (Mgal)all year007
Precipitation, monthly accumulationmonthly totalreport only (in/mo)all year007
Discharge event observation [Visual Monitoring]monthly totalreport only (#/mo)all year007
Durationmonthly totalreport only (hr/mo)all year008
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (Mgal)all year008
Precipitation, monthly accumulationmonthly totalreport only (in/mo)all year008
Discharge event observation [Visual Monitoring]monthly totalreport only (#/mo)all year008
Durationmonthly totalreport only (hr/mo)all year010
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (Mgal)all year010
Precipitation, monthly accumulationmonthly totalreport only (in/mo)all year010
Discharge event observation [Visual Monitoring]monthly totalreport only (#/mo)all year010
Durationmonthly totalreport only (hr/mo)all year014
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (Mgal)all year014
Precipitation, monthly accumulationmonthly totalreport only (in/mo)all year014
Discharge event observation [Visual Monitoring]monthly totalreport only (#/mo)all year014
Durationmonthly totalreport only (hr/mo)all year018
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (Mgal)all year018
Precipitation, monthly accumulationmonthly totalreport only (in/mo)all year018
Discharge event observation [Visual Monitoring]monthly totalreport only (#/mo)all year018
Durationmonthly totalreport only (hr/mo)all year019
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (Mgal)all year019
Precipitation, monthly accumulationmonthly totalreport only (in/mo)all year019
Discharge event observation [Visual Monitoring]monthly totalreport only (#/mo)all year019
Durationmonthly totalreport only (hr/mo)all year021
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (Mgal)all year021
Precipitation, monthly accumulationmonthly totalreport only (in/mo)all year021
Discharge event observation [Visual Monitoring]monthly totalreport only (#/mo)all year021
Durationmonthly totalreport only (hr/mo)all year022
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (Mgal)all year022
Precipitation, monthly accumulationmonthly totalreport only (in/mo)all year022
Discharge event observation [Visual Monitoring]monthly totalreport only (#/mo)all year022
Durationmonthly totalreport only (hr/mo)all year025
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (Mgal)all year025
Precipitation, monthly accumulationmonthly totalreport only (in/mo)all year025
Discharge event observation [Visual Monitoring]monthly totalreport only (#/mo)all year025
Durationmonthly totalreport only (hr/mo)all year026
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (Mgal)all year026
Precipitation, monthly accumulationmonthly totalreport only (in/mo)all year026
Discharge event observation [Visual Monitoring]monthly totalreport only (#/mo)all year026
Durationmonthly totalreport only (hr/mo)all year027
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (Mgal)all year027
Precipitation, monthly accumulationmonthly totalreport only (in/mo)all year027
Discharge event observation [Visual Monitoring]monthly totalreport only (#/mo)all year027
Durationmonthly totalreport only (hr/mo)all year028
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (Mgal)all year028
Precipitation, monthly accumulationmonthly totalreport only (in/mo)all year028
Discharge event observation [Visual Monitoring]monthly totalreport only (#/mo)all year028
Durationmonthly totalreport only (hr/mo)all year029
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (Mgal)all year029
Precipitation, monthly accumulationmonthly totalreport only (in/mo)all year029
Discharge event observation [Visual Monitoring]monthly totalreport only (#/mo)all year029
Durationmonthly totalreport only (hr/mo)all year031
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (Mgal)all year031
Precipitation, monthly accumulationmonthly totalreport only (in/mo)all year031
Discharge event observation [Visual Monitoring]monthly totalreport only (#/mo)all year031
Durationmonthly totalreport only (hr/mo)all year033
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (Mgal)all year033
Precipitation, monthly accumulationmonthly totalreport only (in/mo)all year033
Discharge event observation [Visual Monitoring]monthly totalreport only (#/mo)all year033
Durationmonthly totalreport only (hr/mo)all year035
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (Mgal)all year035
Precipitation, monthly accumulationmonthly totalreport only (in/mo)all year035
Discharge event observation [Visual Monitoring]monthly totalreport only (#/mo)all year035
Durationmonthly totalreport only (hr/mo)all year036
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (Mgal)all year036
Precipitation, monthly accumulationmonthly totalreport only (in/mo)all year036
Discharge event observation [Visual Monitoring]monthly totalreport only (#/mo)all year036
Durationmonthly totalreport only (hr/mo)all year037
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (Mgal)all year037
Precipitation, monthly accumulationmonthly totalreport only (in/mo)all year037
Discharge event observation [Visual Monitoring]monthly totalreport only (#/mo)all year037
Durationmonthly totalreport only (hr/mo)all year038
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (Mgal)all year038
Precipitation, monthly accumulationmonthly totalreport only (in/mo)all year038
Discharge event observation [Visual Monitoring]monthly totalreport only (#/mo)all year038
Durationmonthly totalreport only (hr/mo)all year039
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (Mgal)all year039
Precipitation, monthly accumulationmonthly totalreport only (in/mo)all year039
Discharge event observation [Visual Monitoring]monthly totalreport only (#/mo)all year039
Durationmonthly totalreport only (hr/mo)all year040
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (Mgal)all year040
Precipitation, monthly accumulationmonthly totalreport only (in/mo)all year040
Discharge event observation [Visual Monitoring]monthly totalreport only (#/mo)all year040
Durationmonthly totalreport only (hr/mo)all year041
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (Mgal)all year041
Precipitation, monthly accumulationmonthly totalreport only (in/mo)all year041
Discharge event observation [Visual Monitoring]monthly totalreport only (#/mo)all year041
Durationmonthly totalreport only (hr/mo)all year042
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (Mgal)all year042
Precipitation, monthly accumulationmonthly totalreport only (in/mo)all year042
Discharge event observation [Visual Monitoring]monthly totalreport only (#/mo)all year042
Durationmonthly totalreport only (hr/mo)all year044
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (Mgal)all year044
Precipitation, monthly accumulationmonthly totalreport only (in/mo)all year044
Discharge event observation [Visual Monitoring]monthly totalreport only (#/mo)all year044
Durationmonthly totalreport only (hr/mo)all year045
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (Mgal)all year045
Precipitation, monthly accumulationmonthly totalreport only (in/mo)all year045
Discharge event observation [Visual Monitoring]monthly totalreport only (#/mo)all year045
pHdaily minimum≥ 6 SUall year047
pHdaily maximum≤ 9 SUall year047
Solids, total suspendedmonthly average≤ 20 mg/Lall year047
Solids, total suspendedmaximum weekly average≤ 30 mg/Lall year047
Solids, total suspendedmonthly average≤ 12851 lb/dall year047
Solids, total suspendedmaximum weekly average≤ 19277 lb/dall year047
Nitrogen, total [as N]monthly averagereport only (mg/L)all year047
Nitrogen, total [as N]monthly averagereport only (lb/d)all year047
Nitrogen, ammonia total [as N]monthly average≤ 2 mg/LMay–Nov047
Nitrogen, ammonia total [as N]monthly average≤ 2.9 mg/LJan, Feb, Mar, Apr, Dec047
Nitrogen, ammonia total [as N]daily maximum≤ 6.4 mg/LMay–Nov047
Nitrogen, ammonia total [as N]daily maximum≤ 6.7 mg/LJan, Feb, Mar, Apr, Dec047
Nitrogen, ammonia total [as N]monthly average≤ 1285 lb/dMay–Nov047
Nitrogen, ammonia total [as N]monthly average≤ 1863 lb/dJan, Feb, Mar, Apr, Dec047
Nitrogen, ammonia total [as N]daily maximum≤ 4112 lb/dMay–Nov047
Nitrogen, ammonia total [as N]daily maximum≤ 4305 lb/dJan, Feb, Mar, Apr, Dec047
Phosphorus, total [as P]monthly average≤ 1 mg/Lall year047
Phosphorus, total [as P]monthly averagereport only (lb/d)all year047
Cyanide, free [as free]daily maximumreport only (mg/L)Mar, Jun, Sep, Dec047
Cyanide, free [as free]daily maximumreport only (mg/L)Mar, Jun, Sep, Dec047
Cyanide, free [as free]daily maximumreport only (lb/d)Mar, Jun, Sep, Dec047
Cyanide, free [as free]daily maximumreport only (lb/d)Mar, Jun, Sep, Dec047
Cyanide, free [as free]daily maximumreport only (mg/L)Mar, Jun, Sep, Dec047
Cyanide, free [as free]daily maximumreport only (mg/L)Mar, Jun, Sep, Dec047
Nickel, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec047
Nickel, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec047
Nickel, total recoverabledaily maximumreport only (lb/d)Mar, Jun, Sep, Dec047
Nickel, total recoverabledaily maximumreport only (lb/d)Mar, Jun, Sep, Dec047
Nickel, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec047
Nickel, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec047
Zinc, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec047
Zinc, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec047
Zinc, total recoverabledaily maximumreport only (lb/d)Mar, Jun, Sep, Dec047
Zinc, total recoverabledaily maximumreport only (lb/d)Mar, Jun, Sep, Dec047
Zinc, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec047
Zinc, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec047
Cadmium, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec047
Cadmium, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec047
Cadmium, total recoverabledaily maximumreport only (lb/d)Mar, Jun, Sep, Dec047
Cadmium, total recoverabledaily maximumreport only (lb/d)Mar, Jun, Sep, Dec047
Cadmium, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec047
Cadmium, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec047
Lead, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec047
Lead, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec047
Lead, total recoverabledaily maximumreport only (lb/d)Mar, Jun, Sep, Dec047
Lead, total recoverabledaily maximumreport only (lb/d)Mar, Jun, Sep, Dec047
Lead, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec047
Lead, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec047
Chromium, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec047
Chromium, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec047
Chromium, total recoverabledaily maximumreport only (lb/d)Mar, Jun, Sep, Dec047
Chromium, total recoverabledaily maximumreport only (lb/d)Mar, Jun, Sep, Dec047
Chromium, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec047
Chromium, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec047
Copper, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec047
Copper, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec047
Copper, total recoverabledaily maximumreport only (lb/d)Mar, Jun, Sep, Dec047
Copper, total recoverabledaily maximumreport only (lb/d)Mar, Jun, Sep, Dec047
Copper, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec047
Copper, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec047
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year047
Chlorine, total residualmonthly average≤ .01 mg/Lall year047
Chlorine, total residualdaily maximum< .06 mg/Lall year047
Chlorine, total residualmonthly average≤ 6.4 lb/dall year047
Chlorine, total residualdaily maximum< 38.6 lb/dall year047
E. coli, colony forming units [CFU]monthly geometric mean≤ 125 CFU/100mLApr–Oct047
E. coli, colony forming units [CFU]monthly geometric meanreport only (CFU/100mL)Jan, Feb, Mar, Nov, Dec047
E. coli, colony forming units [CFU]daily maximum≤ 235 CFU/100mLApr–Oct047
E. coli, colony forming units [CFU]daily maximumreport only (CFU/100mL)Jan, Feb, Mar, Nov, Dec047
Toxicity [acute], Ceriodaphnia dubiamaximum≤ 1 tox acuteMay, Nov047
Toxicity [acute], Ceriodaphnia dubiamaximum≤ 1 tox acuteJun, Dec047
Toxicity [acute], Ceriodaphnia dubiamaximum≤ 1 tox acuteJun, Dec047
Toxicity [chronic], Ceriodaphnia dubiamaximum≤ 4 tox chronicMay, Nov047
Toxicity [chronic], Ceriodaphnia dubiamaximum≤ 4 tox chronicJun, Dec047
Toxicity [chronic], Ceriodaphnia dubiamaximum≤ 4 tox chronicJun, Dec047
Toxicity [acute], Pimephales promelas [Fathead Minnow]maximum≤ 1 tox acuteMay, Nov047
Toxicity [acute], Pimephales promelas [Fathead Minnow]maximum≤ 1 tox acuteJun, Dec047
Toxicity [acute], Pimephales promelas [Fathead Minnow]maximum≤ 1 tox acuteJun, Dec047
Toxicity [chronic], Pimephales promelas [Fathead Minnow]maximum≤ 4 tox chronicMay, Nov047
Toxicity [chronic], Pimephales promelas [Fathead Minnow]maximum≤ 4 tox chronicJun, Dec047
Toxicity [chronic], Pimephales promelas [Fathead Minnow]maximum≤ 4 tox chronicJun, Dec047
Mercury, total recoverableannual average≤ 2.7 ng/LFeb, Apr, Jun, Aug, Oct, Dec047
Mercury, total recoverabledaily maximumreport only (ng/L)Feb, Apr, Jun, Aug, Oct, Dec047
Mercury, total recoverabledaily maximumreport only (ng/L)Feb, Apr, Jun, Aug, Oct, Dec047
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/LJan, Feb, Mar, Apr, Dec047
BOD, carbonaceous [5 day, 20 C]monthly average≤ 20 mg/LMay–Nov047
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 40 mg/LJan, Feb, Mar, Apr, Dec047
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 30 mg/LMay–Nov047
BOD, carbonaceous [5 day, 20 C]monthly average≤ 16064 lb/dJan, Feb, Mar, Apr, Dec047
BOD, carbonaceous [5 day, 20 C]monthly average≤ 12851 lb/dMay–Nov047
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 25703 lb/dJan, Feb, Mar, Apr, Dec047
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 19277 lb/dMay–Nov047
Phosphorus, total percent removalmonthly average minimum≥ 70 %all year047
Flow, totalmonthly totalreport only (Mgal/mo)all year047
Durationmonthly totalreport only (hr/mo)all year048
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (Mgal)all year048
Precipitation, monthly accumulationmonthly totalreport only (in/mo)all year048
Discharge event observation [Visual Monitoring]monthly totalreport only (#/mo)all year048
Durationmonthly totalreport only (hr/mo)all year049
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (Mgal)all year049
Precipitation, monthly accumulationmonthly totalreport only (in/mo)all year049
Discharge event observation [Visual Monitoring]monthly totalreport only (#/mo)all year049
Durationmonthly totalreport only (hr/mo)all year060
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (Mgal)all year060
Precipitation, monthly accumulationmonthly totalreport only (in/mo)all year060
Discharge event observation [Visual Monitoring]monthly totalreport only (#/mo)all year060
Durationmonthly totalreport only (hr/mo)all year11A
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (Mgal)all year11A
Precipitation, monthly accumulationmonthly totalreport only (in/mo)all year11A
Discharge event observation [Visual Monitoring]monthly totalreport only (#/mo)all year11A
Durationmonthly totalreport only (hr/mo)all year11B
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (Mgal)all year11B
Precipitation, monthly accumulationmonthly totalreport only (in/mo)all year11B
Discharge event observation [Visual Monitoring]monthly totalreport only (#/mo)all year11B

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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Your permit document is the final word. As JSON: /api/v1/permits/IN0024520 · MCP: https://passage-data.com/mcp