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Windfall WWTP

Sewage treatment plant, Windfall, Indiana. NPDES permit IN0040762, in force until Aug 31, 2028. Last 12 months: over a limit 45 times (last August 2026), 1 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 27 days after each period: form A monthly (19 values)
Renewal application due
Mar 4, 2028 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
33 values over a limit, 0 required values missing, 0 of 12 reports late

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

All 45 values over a limit
Period endingParameterReportedLimitOver by
October 2025E. coli, colony forming units [CFU], daily maximum435 CFU/100mL≤ 235 CFU/100mL85%
October 2025Solids, total suspended, monthly average28.9 mg/L≤ 10 mg/L189%
October 2025Solids, total suspended, maximum weekly average105.7 mg/L≤ 15 mg/L605%
October 2025Solids, total suspended, maximum weekly average38.389 lb/d≤ 16.3 lb/d136%
December 2025Solids, total suspended, monthly average10.5 mg/L≤ 10 mg/L5%
December 2025Solids, total suspended, maximum weekly average19.65 mg/L≤ 15 mg/L31%
January 2026Solids, total suspended, monthly average10.6 mg/L≤ 10 mg/L6%
January 2026Solids, total suspended, maximum weekly average16 mg/L≤ 15 mg/L7%
February 2026Nitrogen, ammonia total [as N], monthly average4.6639 mg/L≤ 1.86 mg/L151%
February 2026Nitrogen, ammonia total [as N], maximum weekly average14.23 mg/L≤ 2.79 mg/L410%
February 2026Nitrogen, ammonia total [as N], maximum weekly average4.5666 lb/d≤ 3.03 lb/d51%
February 2026Solids, total suspended, monthly average11.407 lb/d≤ 10.8 lb/d6%
February 2026Solids, total suspended, monthly average27.6 mg/L≤ 10 mg/L176%
February 2026Solids, total suspended, maximum weekly average40.9 mg/L≤ 15 mg/L173%
March 2026BOD, carbonaceous [5 day, 20 C], monthly average10.9 mg/L≤ 10 mg/L9%
March 2026BOD, carbonaceous [5 day, 20 C], monthly average12.37 lb/d≤ 10.8 lb/d15%
March 2026BOD, carbonaceous [5 day, 20 C], maximum weekly average21.13 lb/d≤ 16.3 lb/d30%
March 2026Nitrogen, ammonia total [as N], monthly average3.903 lb/d≤ 2.02 lb/d93%
March 2026Nitrogen, ammonia total [as N], monthly average3.92 mg/L≤ 1.86 mg/L111%
March 2026Nitrogen, ammonia total [as N], maximum weekly average11.335 lb/d≤ 3.03 lb/d274%
March 2026Nitrogen, ammonia total [as N], maximum weekly average11.95 mg/L≤ 2.79 mg/L328%
March 2026Solids, total suspended, monthly average16.1 mg/L≤ 10 mg/L61%
March 2026Solids, total suspended, monthly average16.64 lb/d≤ 10.8 lb/d54%
March 2026Solids, total suspended, maximum weekly average16.25 mg/L≤ 15 mg/L8%
March 2026Solids, total suspended, maximum weekly average18.25 lb/d≤ 16.3 lb/d12%
April 2026BOD, carbonaceous [5 day, 20 C], maximum weekly average18.03 lb/d≤ 16.3 lb/d11%
May 2026BOD, carbonaceous [5 day, 20 C], monthly average20.274 lb/d≤ 10.8 lb/d88%
May 2026BOD, carbonaceous [5 day, 20 C], maximum weekly average63.012 lb/d≤ 16.3 lb/d287%
May 2026Nitrogen, ammonia total [as N], maximum weekly average2.7612 lb/d≤ 2.02 lb/d37%
June 2026BOD, carbonaceous [5 day, 20 C], monthly average10.88 lb/d≤ 10.8 lb/d1%
June 2026BOD, carbonaceous [5 day, 20 C], monthly average14.9 mg/L≤ 10 mg/L49%
June 2026BOD, carbonaceous [5 day, 20 C], maximum weekly average16.46 lb/d≤ 16.3 lb/d1%
June 2026BOD, carbonaceous [5 day, 20 C], maximum weekly average24.53 mg/L≤ 15 mg/L64%
June 2026Solids, total suspended, monthly average15.99 lb/d≤ 10.8 lb/d48%
June 2026Solids, total suspended, monthly average22.1 mg/L≤ 10 mg/L121%
June 2026Solids, total suspended, maximum weekly average26.91 lb/d≤ 16.3 lb/d65%
June 2026Solids, total suspended, maximum weekly average40.1 mg/L≤ 15 mg/L167%
July 2026BOD, carbonaceous [5 day, 20 C], monthly average10.9 mg/L≤ 10 mg/L9%
July 2026Oxygen, dissolved [DO], daily average minimum5.5 mg/L≥ 6 mg/L8%
August 2026BOD, carbonaceous [5 day, 20 C], monthly average18.397 lb/d≤ 10.8 lb/d70%
August 2026BOD, carbonaceous [5 day, 20 C], maximum weekly average49.285 lb/d≤ 16.3 lb/d202%
August 2026Solids, total suspended, monthly average11.2 mg/L≤ 10 mg/L12%
August 2026Solids, total suspended, monthly average46.246 lb/d≤ 10.8 lb/d328%
August 2026Solids, total suspended, maximum weekly average104.23 lb/d≤ 16.3 lb/d539%
August 2026Solids, total suspended, maximum weekly average19.15 mg/L≤ 15 mg/L28%

Limits in force (24)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]daily average minimum≥ 6 mg/LMay–Nov
Oxygen, dissolved [DO]daily average minimum≥ 5 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≤ 10.8 lb/dall year
Solids, total suspendedmaximum weekly average≤ 16.3 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 1.24 mg/LMay–Nov
Nitrogen, ammonia total [as N]monthly average≤ 1.86 mg/LJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]maximum weekly average≤ 1.86 mg/LMay–Nov
Nitrogen, ammonia total [as N]maximum weekly average≤ 2.79 mg/LJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]monthly average≤ 1.35 lb/dMay–Nov
Nitrogen, ammonia total [as N]monthly average≤ 2.02 lb/dJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]maximum weekly average≤ 2.02 lb/dMay–Nov
Nitrogen, ammonia total [as N]maximum weekly average≤ 3.03 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
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≤ 10.8 lb/dall year
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 16.3 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.

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Your permit document is the final word. As JSON: /api/v1/permits/IN0040762 · MCP: https://passage-data.com/mcp