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Frankfort WWTP, City of

Sewage treatment plant, major discharger, Frankfort, Indiana. NPDES permit IN0022934, in force until Apr 30, 2030. Last 12 months: over a limit 2 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form A monthly (25 values), outfall 001 form AQ quarterly (20 values), outfall 002 form CP monthly (13 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
4 values over a limit, 0 required values missing, 0 of 32 reports late

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

Period endingOutfallParameterReportedLimitOver by
May 2026001Chlorine, total residual, daily maximum.07 mg/L< .06 mg/L17%
August 2026002E. coli, colony forming units [CFU], daily maximum> 2419.6 CFU/100mL≤ 235 CFU/100mL—

Limits in force (87)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]daily average minimum≥ 6 mg/LMay–Nov001
Oxygen, dissolved [DO]daily average minimum≥ 5 mg/LJan, Feb, Mar, Apr, Dec001
pHdaily minimum≥ 6 SUall year001
pHdaily maximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 18 mg/LJan, Feb, Apr, Dec001
Solids, total suspendedmonthly average≤ 12 mg/LMay–Nov001
Solids, total suspendedmaximum weekly average≤ 27 mg/LJan, Feb, Apr, Dec001
Solids, total suspendedmaximum weekly average≤ 18 mg/LMay–Nov001
Solids, total suspendedmonthly average≤ 2000 lb/dJan, Feb, Apr, Dec001
Solids, total suspendedmonthly average≤ 1300 lb/dMay–Nov001
Solids, total suspendedmaximum weekly average≤ 2900 lb/dJan, Feb, Apr, Dec001
Solids, total suspendedmaximum weekly average≤ 2000 lb/dMay–Nov001
Nitrogen, total [as N]monthly averagereport only (mg/L)all year001
Nitrogen, total [as N]monthly averagereport only (lb/d)all year001
Nitrogen, ammonia total [as N]monthly average≤ 1 mg/LMay–Nov001
Nitrogen, ammonia total [as N]monthly average≤ 1.7 mg/LJan, Feb, Mar, Apr, Dec001
Nitrogen, ammonia total [as N]maximum weekly average≤ 1.5 mg/LMay–Nov001
Nitrogen, ammonia total [as N]maximum weekly average≤ 2.6 mg/LJan, Feb, Mar, Apr, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 110 lb/dMay–Nov001
Nitrogen, ammonia total [as N]monthly average≤ 180 lb/dJan, Feb, Mar, Apr, Dec001
Nitrogen, ammonia total [as N]maximum weekly average≤ 160 lb/dMay–Nov001
Nitrogen, ammonia total [as N]maximum weekly average≤ 280 lb/dJan, Feb, Mar, Apr, Dec001
Phosphorus, total [as P]monthly average≤ 1 mg/Lall year001
Phosphorus, total [as P]monthly averagereport only (lb/d)all year001
Nickel, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec001
Nickel, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec001
Nickel, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec001
Nickel, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec001
Zinc, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec001
Zinc, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec001
Zinc, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec001
Zinc, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec001
Cadmium, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec001
Cadmium, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec001
Cadmium, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec001
Cadmium, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec001
Lead, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec001
Lead, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec001
Lead, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec001
Lead, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec001
Chromium, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec001
Chromium, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec001
Chromium, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec001
Chromium, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec001
Copper, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec001
Copper, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec001
Copper, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec001
Copper, total recoverabledaily maximumreport only (mg/L)Mar, Jun, Sep, Dec001
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
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 acuteApr, Oct001
Toxicity [acute], Ceriodaphnia dubiamaximum≤ 1 tox acuteMay, Nov001
Toxicity [acute], Ceriodaphnia dubiamaximum≤ 1 tox acuteMay, Nov001
Toxicity [chronic], Ceriodaphnia dubiamaximum≤ 1 tox chronicApr, Oct001
Toxicity [chronic], Ceriodaphnia dubiamaximum≤ 1 tox chronicMay, Nov001
Toxicity [chronic], Ceriodaphnia dubiamaximum≤ 1 tox chronicMay, Nov001
Toxicity [acute], Pimephales promelas [Fathead Minnow]maximum≤ 1 tox acuteApr, Oct001
Toxicity [acute], Pimephales promelas [Fathead Minnow]maximum≤ 1 tox acuteMay, Nov001
Toxicity [acute], Pimephales promelas [Fathead Minnow]maximum≤ 1 tox acuteMay, Nov001
Toxicity [chronic], Pimephales promelas [Fathead Minnow]maximum≤ 1 tox chronicApr, Oct001
Toxicity [chronic], Pimephales promelas [Fathead Minnow]maximum≤ 1 tox chronicMay, Nov001
Toxicity [chronic], Pimephales promelas [Fathead Minnow]maximum≤ 1 tox chronicMay, Nov001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 15 mg/LJan, Feb, Mar, Apr, Dec001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/LMay–Nov001
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 23 mg/LJan, Feb, Mar, Apr, Dec001
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 15 mg/LMay–Nov001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 1600 lb/dJan, Feb, Mar, Apr, Dec001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 1100 lb/dMay–Nov001
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 2500 lb/dJan, Feb, Mar, Apr, Dec001
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 1600 lb/dMay–Nov001
Flow, totalmonthly totalreport only (Mgal/mo)all year001
pHdaily minimumreport only (SU)all year002
pHdaily maximumreport only (SU)all year002
Solids, total suspendedmonthly averagereport only (mg/L)all year002
Solids, total suspendeddaily maximumreport only (mg/L)all year002
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year002
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year002
Chlorine, total residualmonthly average< .06 mg/LApr–Oct002
Chlorine, total residualdaily maximum< .06 mg/LApr–Oct002
E. coli, colony forming units [CFU]monthly geometric mean≤ 125 CFU/100mLApr–Oct002
E. coli, colony forming units [CFU]daily maximum≤ 235 CFU/100mLApr–Oct002
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all year002
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (mg/L)all year002
Flow, totalmonthly totalreport only (Mgal/mo)all year002

How strict are these limits?

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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/IN0022934 · MCP: https://passage-data.com/mcp