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Lapel WWTP

Sewage treatment plant, Lapel, Indiana. NPDES permit IN0020087, in force until Jul 31, 2031. Last 12 months: over a limit once (last April 2026), 4 required values missing, 11 of 14 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
1 value over a limit, 4 required values missing, 11 of 16 reports late

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

Period endingParameterReportedLimit
April 2026pH, daily minimum5.5 SU≥ 6 SU

Limits in force (28)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]daily average minimum≥ 5 mg/LMay–Nov
Oxygen, dissolved [DO]daily average minimum≥ 4 mg/LJan, Feb, Mar, Apr, Dec
pHdaily minimum≥ 6 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 10 mg/Lall year
Solids, total suspendedmaximum weekly average≤ 15 mg/Lall year
Solids, total suspendedmonthly average≤ 33 lb/dall year
Solids, total suspendedmaximum weekly average≤ 50 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 1.5 mg/LMay–Nov
Nitrogen, ammonia total [as N]monthly average≤ 2.1 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≤ 3.1 mg/LJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]monthly average≤ 5 lb/dMay–Nov
Nitrogen, ammonia total [as N]monthly average≤ 7 lb/dJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]maximum weekly average≤ 7.7 lb/dMay–Nov
Nitrogen, ammonia total [as N]maximum weekly average≤ 10.3 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
Toxicity [acute], Ceriodaphnia dubiamaximum≤ 1 tox acuteJul
Toxicity [chronic], Ceriodaphnia dubiamaximum≤ 1.4 tox chronicJul
Toxicity [acute], Pimephales promelas [Fathead Minnow]maximum≤ 1 tox acuteJul
Toxicity [chronic], Pimephales promelas [Fathead Minnow]maximum≤ 1.4 tox chronicJul
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≤ 33 lb/dall year
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 50 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.

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/IN0020087 · MCP: https://passage-data.com/mcp