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Redkey WWTP

Sewage treatment plant, Redkey, Indiana. NPDES permit IN0024406, in force until Nov 30, 2029. Last 12 months: over a limit once (last October 2025), 3 of 33 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 27 days after each period: outfall 001 form A monthly (21 values), outfall 006 form C monthly (4 values), outfall 007 form C monthly (4 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
12 values over a limit, 6 required values missing, 8 of 51 reports late

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

Period endingParameterReportedLimitOver by
October 2025Phosphorus, total [as P], monthly average1.079 mg/L≤ 1 mg/L8%

Limits in force (34)

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≤ 30 mg/Lall year001
Solids, total suspendedmaximum weekly average≤ 45 mg/Lall year001
Solids, total suspendedmonthly average≤ 169 lb/dall year001
Solids, total suspendedmaximum weekly average≤ 253.5 lb/dall year001
Nitrogen, ammonia total [as N]monthly average≤ 1.4 mg/LMay–Nov001
Nitrogen, ammonia total [as N]monthly average≤ 2.1 mg/LJan, Feb, Mar, Apr, Dec001
Nitrogen, ammonia total [as N]maximum weekly average≤ 2.1 mg/LMay–Nov001
Nitrogen, ammonia total [as N]maximum weekly average≤ 3.2 mg/LJan, Feb, Mar, Apr, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 7.9 lb/dMay–Nov001
Nitrogen, ammonia total [as N]monthly average≤ 11.8 lb/dJan, Feb, Mar, Apr, Dec001
Nitrogen, ammonia total [as N]maximum weekly average≤ 11.8 lb/dMay–Nov001
Nitrogen, ammonia total [as N]maximum weekly average≤ 18 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
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
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
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≤ 140.8 lb/dall year001
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 225.3 lb/dall year001
Flow, totalmonthly totalreport only (Mgal/mo)all year001
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

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/IN0024406 · MCP: https://passage-data.com/mcp