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Kirklin WWTP

Sewage treatment plant, Kirklin, Indiana. NPDES permit IN0020630, in force until May 31, 2030. Last 12 months: over a limit 6 times (last August 2026), 1 of 11 reports late. 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
6 values over a limit, 0 required values missing, 2 of 12 reports late

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

Period endingParameterReportedLimitOver by
October 2025BOD, carbonaceous [5 day, 20 C], maximum weekly average50.37 mg/L≤ 30 mg/L68%
March 2026BOD, carbonaceous [5 day, 20 C], maximum weekly average43.55 mg/L≤ 40 mg/L9%
March 2026BOD, carbonaceous [5 day, 20 C], maximum weekly average70.27 lb/d≤ 66.8 lb/d5%
May 2026BOD, carbonaceous [5 day, 20 C], maximum weekly average70.75 lb/d≤ 50.1 lb/d41%
August 2026BOD, carbonaceous [5 day, 20 C], monthly average40.17 mg/L≤ 20 mg/L101%
August 2026BOD, carbonaceous [5 day, 20 C], maximum weekly average95.02 mg/L≤ 30 mg/L217%

Limits in force (32)

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≤ 24 mg/LMay–Nov
Solids, total suspendedmaximum weekly average≤ 45 mg/LJan, Feb, Mar, Apr, Dec
Solids, total suspendedmaximum weekly average≤ 36 mg/LMay–Nov
Solids, total suspendedmonthly average≤ 50.1 lb/dJan, Feb, Mar, Apr, Dec
Solids, total suspendedmonthly average≤ 40.1 lb/dMay–Nov
Solids, total suspendedmaximum weekly average≤ 75.1 lb/dJan, Feb, Mar, Apr, Dec
Solids, total suspendedmaximum weekly average≤ 60.1 lb/dMay–Nov
Nitrogen, ammonia total [as N]monthly average≤ 1.3 mg/LMay–Nov
Nitrogen, ammonia total [as N]monthly average≤ 1.9 mg/LJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]maximum weekly average≤ 1.9 mg/LMay–Nov
Nitrogen, ammonia total [as N]maximum weekly average≤ 2.9 mg/LJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]monthly average≤ 2.2 lb/dMay–Nov
Nitrogen, ammonia total [as N]monthly average≤ 3.2 lb/dJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]maximum weekly average≤ 3.2 lb/dMay–Nov
Nitrogen, ammonia total [as N]maximum weekly average≤ 4.8 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≤ 25 mg/LJan, Feb, Mar, Apr, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 20 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≤ 30 mg/LMay–Nov
BOD, carbonaceous [5 day, 20 C]monthly average≤ 41.7 lb/dJan, Feb, Mar, Apr, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 33.4 lb/dMay–Nov
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 66.8 lb/dJan, Feb, Mar, Apr, Dec
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 50.1 lb/dMay–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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Your permit document is the final word. As JSON: /api/v1/permits/IN0020630 · MCP: https://passage-data.com/mcp