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Roann WWTP

Sewage treatment plant, Roann, Indiana. NPDES permit IN0040533, in force until Jun 30, 2031. Last 12 months: over a limit once (last January 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form B monthly (18 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 12 reports late

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

Period endingParameterReportedLimitOver by
January 2026Nitrogen, ammonia total [as N], maximum weekly average18.85 mg/L≤ 16.2 mg/L16%

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≤ 18.8 lb/dall year
Solids, total suspendedmaximum weekly average≤ 28.2 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 10.8 mg/Lall year
Nitrogen, ammonia total [as N]maximum weekly average≤ 16.2 mg/Lall year
Nitrogen, ammonia total [as N]monthly average≤ 6.8 lb/dall year
Nitrogen, ammonia total [as N]maximum weekly average≤ 10.1 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≤ 15.6 lb/dall year
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 25 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/IN0040533 · MCP: https://passage-data.com/mcp