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City of Ladora

Sewage treatment plant, Ladora, Iowa. NPDES permit IA0058521, in force until Apr 30, 2029. Last 12 months: over a limit once (last April 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (15 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
3 values over a limit, 30 required values missing, 2 of 12 reports late

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

Period endingParameterReportedLimitOver by
April 2026Solids, total suspended, 30-day average110≤ 80 mg/L38%

Limits in force (59)

ParameterStatisticLimitMonths
pHdaily minimum≥ 6 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspended30-day average≤ 80 mg/Lall year
Solids, total suspended7-day average≤ 120 mg/Lall year
Solids, total suspended30-day average≤ 134 lb/dall year
Solids, total suspended7-day average≤ 201 lb/dall year
Nitrogen, ammonia total [as N]30-day average≤ 8.3 mg/LApr
Nitrogen, ammonia total [as N]30-day average≤ 9.2 mg/LMar
Nitrogen, ammonia total [as N]30-day average≤ 7.7 mg/LJun
Nitrogen, ammonia total [as N]30-day average≤ 7.7 mg/LJul
Nitrogen, ammonia total [as N]30-day average≤ 26.8 mg/LJan
Nitrogen, ammonia total [as N]30-day average≤ 6.3 mg/LOct
Nitrogen, ammonia total [as N]30-day average≤ 7.1 mg/LAug
Nitrogen, ammonia total [as N]30-day average≤ 14.8 mg/LFeb
Nitrogen, ammonia total [as N]30-day average≤ 6.3 mg/LSep
Nitrogen, ammonia total [as N]30-day average≤ 7.6 mg/LMay
Nitrogen, ammonia total [as N]30-day average≤ 6.3 mg/LNov
Nitrogen, ammonia total [as N]30-day average≤ 7.5 mg/LDec
Nitrogen, ammonia total [as N]daily maximum≤ 8.3 mg/LApr
Nitrogen, ammonia total [as N]daily maximum≤ 9.2 mg/LMar
Nitrogen, ammonia total [as N]daily maximum≤ 7.7 mg/LJun
Nitrogen, ammonia total [as N]daily maximum≤ 7.7 mg/LJul
Nitrogen, ammonia total [as N]daily maximum≤ 26.8 mg/LJan
Nitrogen, ammonia total [as N]daily maximum≤ 6.3 mg/LOct
Nitrogen, ammonia total [as N]daily maximum≤ 7.1 mg/LAug
Nitrogen, ammonia total [as N]daily maximum≤ 14.8 mg/LFeb
Nitrogen, ammonia total [as N]daily maximum≤ 6.3 mg/LSep
Nitrogen, ammonia total [as N]daily maximum≤ 7.6 mg/LMay
Nitrogen, ammonia total [as N]daily maximum≤ 6.3 mg/LNov
Nitrogen, ammonia total [as N]daily maximum≤ 7.5 mg/LDec
Nitrogen, ammonia total [as N]30-day average≤ 14 lb/dApr
Nitrogen, ammonia total [as N]30-day average≤ 15.5 lb/dMar
Nitrogen, ammonia total [as N]30-day average≤ 12.8 lb/dJun
Nitrogen, ammonia total [as N]30-day average≤ 12.8 lb/dJul
Nitrogen, ammonia total [as N]30-day average≤ 45 lb/dJan
Nitrogen, ammonia total [as N]30-day average≤ 10.6 lb/dOct
Nitrogen, ammonia total [as N]30-day average≤ 11.9 lb/dAug
Nitrogen, ammonia total [as N]30-day average≤ 24.9 lb/dFeb
Nitrogen, ammonia total [as N]30-day average≤ 10.6 lb/dSep
Nitrogen, ammonia total [as N]30-day average≤ 12.8 lb/dMay
Nitrogen, ammonia total [as N]30-day average≤ 10.6 lb/dNov
Nitrogen, ammonia total [as N]30-day average≤ 12.6 lb/dDec
Nitrogen, ammonia total [as N]daily maximum≤ 14 lb/dApr
Nitrogen, ammonia total [as N]daily maximum≤ 15.5 lb/dMar
Nitrogen, ammonia total [as N]daily maximum≤ 12.8 lb/dJun
Nitrogen, ammonia total [as N]daily maximum≤ 12.8 lb/dJul
Nitrogen, ammonia total [as N]daily maximum≤ 45 lb/dJan
Nitrogen, ammonia total [as N]daily maximum≤ 10.6 lb/dOct
Nitrogen, ammonia total [as N]daily maximum≤ 11.9 lb/dAug
Nitrogen, ammonia total [as N]daily maximum≤ 24.9 lb/dFeb
Nitrogen, ammonia total [as N]daily maximum≤ 10.6 lb/dSep
Nitrogen, ammonia total [as N]daily maximum≤ 12.8 lb/dMay
Nitrogen, ammonia total [as N]daily maximum≤ 10.6 lb/dNov
Nitrogen, ammonia total [as N]daily maximum≤ 12.6 lb/dDec
E. coligeometric mean≤ 126 #/100mLMar–Nov
BOD, carbonaceous [5 day, 20 C]30-day average≤ 25 mg/Lall year
BOD, carbonaceous [5 day, 20 C]7-day average≤ 40 mg/Lall year
BOD, carbonaceous [5 day, 20 C]30-day average≤ 42 lb/dall year
BOD, carbonaceous [5 day, 20 C]7-day average≤ 67 lb/dall year

How strict are these limits?

Cited limits by parameter: Iowa'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/IA0058521 · MCP: https://passage-data.com/mcp