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Legado Wastewater Treatment Plant

Sewerage Systems, Lafayette, Indiana. NPDES permit IN0064505, in force until May 31, 2027. Last 12 months: over a limit 2 times (last January 2026), 1 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (18 values)
Renewal application due
Dec 2, 2026 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
1 value over a limit, 2 required values missing, 1 of 12 reports late

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

Period endingParameterReportedLimitOver by
January 2026BOD, carbonaceous [5 day, 20 C], maximum weekly average1.176 lb/d≤ 1.17 lb/d1%
January 2026BOD, carbonaceous [5 day, 20 C], maximum weekly average47 mg/L≤ 40 mg/L18%

Limits in force (18)

ParameterStatisticLimitMonths
pHdaily minimum≥ 6 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedmaximum weekly average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ .88 lb/dall year
Solids, total suspendedmaximum weekly average≤ 1.31 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 12.1 mg/Lall year
Nitrogen, ammonia total [as N]maximum weekly average≤ 18.2 mg/Lall year
Nitrogen, ammonia total [as N]monthly average≤ .35 lb/dall year
Nitrogen, ammonia total [as N]maximum weekly average≤ .53 lb/dall 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
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/Lall year
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 40 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ .73 lb/dall year
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 1.17 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/IN0064505 · MCP: https://passage-data.com/mcp