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Rising Sun WWTP, City of

Sewage treatment plant, Rising Sun, Indiana. NPDES permit IN0024431, in force until Apr 30, 2028. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (19 values)
Renewal application due
Nov 2, 2027 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 2 required values missing, 1 of 12 reports late

Limits in force (23)

ParameterStatisticLimitMonths
pHdaily minimum≥ 6 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedweekly average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 150.2 lb/dall year
Solids, total suspendedweekly average≤ 225.3 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 3.1 mg/LMay–Nov
Nitrogen, ammonia total [as N]monthly average≤ 10 mg/LJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]weekly average≤ 4.7 mg/LMay–Nov
Nitrogen, ammonia total [as N]weekly average≤ 15 mg/LJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]monthly average≤ 15.5 lb/dMay–Nov
Nitrogen, ammonia total [as N]monthly average≤ 50.1 lb/dJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]weekly average≤ 23.5 lb/dMay–Nov
Nitrogen, ammonia total [as N]weekly average≤ 75.1 lb/dJan, Feb, Mar, Apr, Dec
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantmaximum weekly averagereport only (MGD)all year
E. coli, colony forming units [CFU]monthly geometric mean≤ 125 CFU/100mLall year
E. coli, colony forming units [CFU]daily maximum≤ 235 CFU/100mLall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/Lall year
BOD, carbonaceous [5 day, 20 C]weekly average≤ 40 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 125.2 lb/dall year
BOD, carbonaceous [5 day, 20 C]weekly average≤ 200.3 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/IN0024431 · MCP: https://passage-data.com/mcp