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Shoals WWTP

Sewage treatment plant, East Shoals, Indiana. NPDES permit IN0040631, in force until Jul 20, 2028. Last 12 months: over a limit 12 times (last August 2026), 1 required value missing, 2 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (15 values)
Renewal application due
Jan 22, 2028 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
10 values over a limit, 1 required value missing, 3 of 12 reports late

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

Period endingParameterReportedLimitOver by
October 2025E. coli, colony forming units [CFU], daily maximum1011.2 CFU/100mL≤ 235 CFU/100mL330%
October 2025E. coli, colony forming units [CFU], monthly geometric mean1011.2 CFU/100mL≤ 125 CFU/100mL709%
October 2025Solids, total suspended, monthly average85.8 mg/L≤ 70 mg/L23%
October 2025Solids, total suspended, maximum weekly average113 mg/L≤ 105 mg/L8%
November 2025Dilution factor, daily maximum.1046 Ratio≤ .1 Ratio5%
February 2026Dilution factor, daily maximum.2079 Ratio≤ .1 Ratio108%
June 2026E. coli, colony forming units [CFU], daily maximum1011 CFU/100mL≤ 235 CFU/100mL330%
June 2026E. coli, colony forming units [CFU], monthly geometric mean1011.2 CFU/100mL≤ 125 CFU/100mL709%
July 2026E. coli, colony forming units [CFU], daily maximum1011 CFU/100mL≤ 235 CFU/100mL330%
July 2026E. coli, colony forming units [CFU], monthly geometric mean1011 CFU/100mL≤ 125 CFU/100mL709%
August 2026E. coli, colony forming units [CFU], daily maximum1011.2 CFU/100mL≤ 235 CFU/100mL330%
August 2026E. coli, colony forming units [CFU], monthly geometric mean1011.2 CFU/100mL≤ 125 CFU/100mL709%

Limits in force (17)

ParameterStatisticLimitMonths
Streamflowmonthly averagereport only (MGD)all year
pHdaily minimum≥ 6 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 70 mg/Lall year
Solids, total suspendedmaximum weekly average≤ 105 mg/Lall year
Nitrogen, ammonia total [as N]monthly average≤ 8.6 mg/LMay–Nov
Nitrogen, ammonia total [as N]monthly average≤ 9.3 mg/LJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]maximum weekly average≤ 12.9 mg/LMay–Nov
Nitrogen, ammonia total [as N]maximum weekly average≤ 14 mg/LJan, Feb, Mar, Apr, Dec
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)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
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
Dilution factordaily maximum≤ .1 Ratioall 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/IN0040631 · MCP: https://passage-data.com/mcp