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Koontz Lake Regional Sewer District

Sewage treatment plant, Koontz Lake, Indiana. NPDES permit IN0063606, in force until Aug 31, 2030. Last 12 months: over a limit 6 times (last July 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (19 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
1 value over a limit, 0 required values missing, 0 of 12 reports late

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

Period endingParameterReportedLimitOver by
October 2025Nitrogen, ammonia total [as N], maximum weekly average3.515 mg/L≤ 1.6 mg/L120%
March 2026Solids, total suspended, monthly average13.4 mg/L≤ 12 mg/L12%
March 2026Solids, total suspended, maximum weekly average41.4 mg/L≤ 18 mg/L130%
June 2026Nitrogen, ammonia total [as N], monthly average1.27 mg/L≤ 1.1 mg/L15%
June 2026Nitrogen, ammonia total [as N], maximum weekly average5.167 mg/L≤ 1.6 mg/L223%
July 2026Oxygen, dissolved [DO], daily average minimum5.9 mg/L≥ 6 mg/L2%

Limits in force (23)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]daily average minimum≥ 6 mg/Lall year
pHdaily minimum≥ 6 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 12 mg/Lall year
Solids, total suspendedmaximum weekly average≤ 18 mg/Lall year
Solids, total suspendedmonthly average≤ 21.9 lb/dall year
Solids, total suspendedmaximum weekly average≤ 32.9 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 1.1 mg/LMay–Nov
Nitrogen, ammonia total [as N]monthly average≤ 1.6 mg/LJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]maximum weekly average≤ 1.6 mg/LMay–Nov
Nitrogen, ammonia total [as N]maximum weekly average≤ 2.4 mg/LJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]monthly average≤ 2 lb/dMay–Nov
Nitrogen, ammonia total [as N]monthly average≤ 2.9 lb/dJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]maximum weekly average≤ 2.9 lb/dMay–Nov
Nitrogen, ammonia total [as N]maximum weekly average≤ 4.4 lb/dJan, Feb, Mar, Apr, Dec
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
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≤ 10 mg/Lall year
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 15 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 18.3 lb/dall year
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 27.4 lb/dall year
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/IN0063606 · MCP: https://passage-data.com/mcp