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Lagrange WWTP

Sewage treatment plant, major discharger, Lagrange, Indiana. NPDES permit IN0020478, in force until Feb 28, 2027. Last 12 months: over a limit 2 times (last April 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (24 values), form TX twice a year
Renewal application due
Sep 1, 2026 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
4 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
February 2026Nitrogen, ammonia total [as N], daily maximum3.95 mg/L≤ 3.65 mg/L8%
April 2026E. coli, colony forming units [CFU], daily maximum260 CFU/100mL≤ 235 CFU/100mL11%

Limits in force (47)

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≤ 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≤ 451 lb/dJan, Feb, Mar, Apr, Dec
Solids, total suspendedmonthly average≤ 270 lb/dMay–Nov
Solids, total suspendedmaximum weekly average≤ 676 lb/dJan, Feb, Mar, Apr, Dec
Solids, total suspendedmaximum weekly average≤ 406 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≤ .94 mg/LMay–Nov
Nitrogen, ammonia total [as N]monthly average≤ 1.57 mg/LJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]daily maximum≤ 2.19 mg/LMay–Nov
Nitrogen, ammonia total [as N]daily maximum≤ 3.65 mg/LJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]monthly average≤ 14.1 lb/dMay–Nov
Nitrogen, ammonia total [as N]monthly average≤ 23.6 lb/dJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]daily maximum≤ 32.9 lb/dMay–Nov
Nitrogen, ammonia total [as N]daily maximum≤ 54.8 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
Toxicity [acute], Ceriodaphnia dubiamaximum≤ 1 tox acuteAug
Toxicity [acute], Ceriodaphnia dubiamaximum≤ 1 tox acuteSep
Toxicity [chronic], Ceriodaphnia dubiamaximum≤ 1.3 tox chronicAug
Toxicity [chronic], Ceriodaphnia dubiamaximum≤ 1.3 tox chronicSep
Toxicity [acute], Pimephales promelas [Fathead Minnow]maximum≤ 1 tox acuteAug
Toxicity [acute], Pimephales promelas [Fathead Minnow]maximum≤ 1 tox acuteSep
Toxicity [chronic], Pimephales promelas [Fathead Minnow]maximum≤ 1.3 tox chronicAug
Toxicity [chronic], Pimephales promelas [Fathead Minnow]maximum≤ 1.3 tox chronicSep
Mercury, total recoverableannual average≤ 8 ng/LFeb, Apr, Jun, Aug, Oct, Dec
Mercury, total recoverabledaily maximumreport only (ng/L)Feb, Apr, Jun, Aug, Oct, Dec
Mercury, total recoverabledaily maximumreport only (ng/L)Feb, Apr, Jun, Aug, Oct, Dec
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≤ 23 mg/LMay–Nov
BOD, carbonaceous [5 day, 20 C]monthly average≤ 376 lb/dJan, Feb, Mar, Apr, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 225 lb/dMay–Nov
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 601 lb/dJan, Feb, Mar, Apr, Dec
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 345 lb/dMay–Nov
Phosphorus, total percent removalmonthly average minimum≥ 80 %all 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/IN0020478 · MCP: https://passage-data.com/mcp