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Schererville WWTP

Sewage treatment plant, major discharger, Schererville, Indiana. NPDES permit IN0024457, in force until Jul 31, 2028. Last 12 months: over a limit 3 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 29 days after each period: form A monthly (26 values)
Renewal application due
Feb 2, 2028 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
2 values over a limit, 1 required value missing, 2 of 12 reports late

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

Period endingParameterReportedLimitOver by
October 2025E. coli, colony forming units [CFU], daily maximum362 CFU/100mL≤ 235 CFU/100mL54%
June 2026E. coli, colony forming units [CFU], daily maximum423 CFU/100mL≤ 235 CFU/100mL80%
August 2026E. coli, colony forming units [CFU], daily maximum1705 CFU/100mL≤ 235 CFU/100mL626%

Limits in force (47)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]daily average minimum≥ 7 mg/LMay–Nov
Oxygen, dissolved [DO]daily average minimum≥ 6 mg/LJan, Feb, Mar, Apr, Dec
pHdaily minimum≥ 6 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 19 mg/LJan, Feb, Mar, Apr, Dec
Solids, total suspendedmonthly average≤ 12 mg/LMay–Nov
Solids, total suspendedmaximum weekly average≤ 29 mg/LJan, Feb, Mar, Apr, Dec
Solids, total suspendedmaximum weekly average≤ 18 mg/LMay–Nov
Solids, total suspendedmonthly average≤ 1387 lb/dJan, Feb, Mar, Apr, Dec
Solids, total suspendedmonthly average≤ 876 lb/dMay–Nov
Solids, total suspendedmaximum weekly average≤ 2118 lb/dJan, Feb, Mar, Apr, Dec
Solids, total suspendedmaximum weekly average≤ 1314 lb/dMay–Nov
Nitrogen, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, total [as N]monthly averagereport only (lb/d)all year
Nitrogen, ammonia total [as N]monthly average≤ 1.5 mg/LMay–Nov
Nitrogen, ammonia total [as N]monthly average≤ 3 mg/LJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]maximum weekly average≤ 2.3 mg/LMay–Nov
Nitrogen, ammonia total [as N]maximum weekly average≤ 4.5 mg/LJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]monthly average≤ 110 lb/dMay–Nov
Nitrogen, ammonia total [as N]monthly average≤ 219 lb/dJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]maximum weekly average≤ 168 lb/dMay–Nov
Nitrogen, ammonia total [as N]maximum weekly average≤ 329 lb/dJan, Feb, Mar, Apr, Dec
Phosphorus, total [as P]monthly average≤ 1 mg/Lall year
Phosphorus, total [as P]monthly averagereport only (lb/d)all year
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
E. coli, colony forming units [CFU]daily maximumreport only (CFU/100mL)Apr–Oct
Number of Eventsmonthly totalreport only (# exceed)Apr–Oct
Number of Eventsmonthly totalreport only (#)Apr–Oct
Toxicity [acute], Ceriodaphnia dubiadaily maximum≤ 1 tox acuteFeb
Toxicity [acute], Ceriodaphnia dubiadaily maximum≤ 1 tox acuteJan
Toxicity [chronic], Ceriodaphnia dubiadaily maximum≤ 1 tox chronicFeb
Toxicity [chronic], Ceriodaphnia dubiadaily maximum≤ 1 tox chronicJan
Toxicity [acute], Pimephales promelas [Fathead Minnow]daily maximum≤ 1 tox acuteFeb
Toxicity [acute], Pimephales promelas [Fathead Minnow]daily maximum≤ 1 tox acuteJan
Toxicity [chronic], Pimephales promelas [Fathead Minnow]daily maximum≤ 1 tox chronicFeb
Toxicity [chronic], Pimephales promelas [Fathead Minnow]daily maximum≤ 1 tox chronicJan
BOD, carbonaceous [5 day, 20 C]monthly average≤ 16 mg/LJan, Feb, Mar, Apr, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/LMay–Nov
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 24 mg/LJan, Feb, Mar, Apr, Dec
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 15 mg/LMay–Nov
BOD, carbonaceous [5 day, 20 C]monthly average≤ 1168 lb/dJan, Feb, Mar, Apr, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 730 lb/dMay–Nov
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 1752 lb/dJan, Feb, Mar, Apr, Dec
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 1095 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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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/IN0024457 · MCP: https://passage-data.com/mcp