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Mitchell Wastewater Treatment Plant

Sewage treatment plant, Mitchell, Indiana. NPDES permit IN0023787, in force until Oct 31, 2028. Last 12 months: no values over a limit, 9 of 10 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (26 values)
Renewal application due
May 4, 2028 · 180 days before expiry; your permit may set another date
Last report on file
July 2026
Oct 2024 – Sep 2025
0 values over a limit, 2 required values missing, 6 of 12 reports late

Limits in force (39)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]daily average minimum≥ 6 mg/LMay–Nov
Oxygen, dissolved [DO]daily average minimum≥ 5 mg/LJan, Feb, Mar, Apr, Dec
pHdaily minimum≥ 6 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/LJan, Feb, Mar, Apr, Dec
Solids, total suspendedmonthly average≤ 18 mg/LMay–Nov
Solids, total suspendedmaximum weekly average≤ 45 mg/LJan, Feb, Mar, Apr, Dec
Solids, total suspendedmaximum weekly average≤ 27 mg/LMay–Nov
Solids, total suspendedmonthly average≤ 141 lb/dJan, Feb, Mar, Apr, Dec
Solids, total suspendedmonthly average≤ 85 lb/dMay–Nov
Solids, total suspendedmaximum weekly average≤ 212 lb/dJan, Feb, Mar, Apr, Dec
Solids, total suspendedmaximum weekly average≤ 127 lb/dMay–Nov
Nitrogen, ammonia total [as N]monthly average≤ 1.2 mg/LMay–Nov
Nitrogen, ammonia total [as N]monthly average≤ 1.8 mg/LJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]maximum weekly average≤ 1.8 mg/LMay–Nov
Nitrogen, ammonia total [as N]maximum weekly average≤ 2.7 mg/LJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]monthly average≤ 5.7 lb/dMay–Nov
Nitrogen, ammonia total [as N]monthly average≤ 8.5 lb/dJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]maximum weekly average≤ 8.5 lb/dMay–Nov
Nitrogen, ammonia total [as N]maximum weekly average≤ 12.7 lb/dJan, Feb, Mar, Apr, Dec
Phosphorus, total [as P]monthly average≤ 1 mg/LMay–Nov
Phosphorus, total [as P]monthly averagereport only (lb/d)May–Nov
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Chlorine, total residualmonthly average< .06 mg/LApr–Oct
Chlorine, total residualdaily maximum< .06 mg/LApr–Oct
Chlorine, total residualdaily minimum≥ .5 mg/LApr–Oct
Chlorine, total residualdaily maximumreport only (mg/L)Apr–Oct
E. coli, colony forming units [CFU]monthly geometric mean≤ 125 CFU/100mLApr–Oct
E. coli, colony forming units [CFU]daily maximum≤ 235 CFU/100mLApr–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/LJan, Feb, Mar, Apr, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 15 mg/LMay–Nov
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 40 mg/LJan, Feb, Mar, Apr, Dec
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 22.5 mg/LMay–Nov
BOD, carbonaceous [5 day, 20 C]monthly average≤ 118 lb/dJan, Feb, Mar, Apr, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 71 lb/dMay–Nov
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 189 lb/dJan, Feb, Mar, Apr, Dec
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 106 lb/dMay–Nov
Phosphorus, total percent removalmonthly average minimumreport only (%)May–Nov
Flow, totalmonthly totalreport only (Mgal/mo)all year

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/IN0023787 · MCP: https://passage-data.com/mcp