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City of Wheatland

Sewage treatment plant, Wheatland, Iowa. NPDES permit IA0058912, in force until Feb 28, 2030. Last 12 months: over a limit 4 times (last November 2025). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (30 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
20 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
October 2025Chlorine, total residual, 30-day average.021≤ .015 mg/L40%
October 2025Chlorine, total residual, daily maximum.03≤ .02 mg/L50%
November 2025Chlorine, total residual, 30-day average.0275≤ .015 mg/L83%
November 2025Chlorine, total residual, daily maximum.03≤ .02 mg/L50%

Limits in force (74)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]daily minimum≥ 4.1 mg/Lall year
BOD, 5-day, 20 deg. C30-day averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all year
BOD, 5-day, 20 deg. C30-day averagereport only (lb/d)all year
BOD, 5-day, 20 deg. Cdaily maximumreport only (lb/d)all year
pHdaily minimum≥ 6.5 SUall year
pHdaily maximum≤ 9 SUall year
pH30-day averagereport only (SU)all year
pHdaily maximumreport only (SU)all year
Solids, total suspended30-day average≤ 30 mg/Lall year
Solids, total suspended7-day average≤ 45 mg/Lall year
Solids, total suspended30-day average≤ 77 lb/dall year
Solids, total suspended7-day average≤ 115 lb/dall year
Solids, total suspended30-day averagereport only (mg/L)all year
Solids, total suspendeddaily maximumreport only (mg/L)all year
Solids, total suspended30-day averagereport only (lb/d)all year
Solids, total suspendeddaily maximumreport only (lb/d)all year
Nitrogen, ammonia total [as N]30-day average≤ 8.3 mg/LJan
Nitrogen, ammonia total [as N]30-day average≤ 3.8 mg/LOct
Nitrogen, ammonia total [as N]30-day average≤ 2.6 mg/LSep
Nitrogen, ammonia total [as N]30-day average≤ 5.7 mg/LNov
Nitrogen, ammonia total [as N]30-day average≤ 2.3 mg/LAug
Nitrogen, ammonia total [as N]30-day average≤ 4.2 mg/LMay
Nitrogen, ammonia total [as N]30-day average≤ 9.6 mg/LFeb
Nitrogen, ammonia total [as N]30-day average≤ 3.7 mg/LApr
Nitrogen, ammonia total [as N]30-day average≤ 2.4 mg/LJul
Nitrogen, ammonia total [as N]30-day average≤ 8.2 mg/LMar
Nitrogen, ammonia total [as N]30-day average≤ 6 mg/LDec
Nitrogen, ammonia total [as N]30-day average≤ 3.2 mg/LJun
Nitrogen, ammonia total [as N]daily maximum≤ 19.5 mg/LJan
Nitrogen, ammonia total [as N]daily maximum≤ 17.8 mg/LOct
Nitrogen, ammonia total [as N]daily maximum≤ 17.8 mg/LSep
Nitrogen, ammonia total [as N]daily maximum≤ 15.1 mg/LNov
Nitrogen, ammonia total [as N]daily maximum≤ 16.5 mg/LAug
Nitrogen, ammonia total [as N]daily maximum≤ 12.9 mg/LMay
Nitrogen, ammonia total [as N]daily maximum≤ 16.7 mg/LFeb
Nitrogen, ammonia total [as N]daily maximum≤ 11.7 mg/LApr
Nitrogen, ammonia total [as N]daily maximum≤ 14 mg/LJul
Nitrogen, ammonia total [as N]daily maximum≤ 15.3 mg/LMar
Nitrogen, ammonia total [as N]daily maximum≤ 17.8 mg/LDec
Nitrogen, ammonia total [as N]daily maximum≤ 14 mg/LJun
Nitrogen, ammonia total [as N]30-day average≤ 18.7 lb/dJan
Nitrogen, ammonia total [as N]30-day average≤ 8.5 lb/dOct
Nitrogen, ammonia total [as N]30-day average≤ 5.8 lb/dSep
Nitrogen, ammonia total [as N]30-day average≤ 12.7 lb/dNov
Nitrogen, ammonia total [as N]30-day average≤ 5.2 lb/dAug
Nitrogen, ammonia total [as N]30-day average≤ 9.5 lb/dMay
Nitrogen, ammonia total [as N]30-day average≤ 21.6 lb/dFeb
Nitrogen, ammonia total [as N]30-day average≤ 8.3 lb/dApr
Nitrogen, ammonia total [as N]30-day average≤ 5.5 lb/dJul
Nitrogen, ammonia total [as N]30-day average≤ 18.4 lb/dMar
Nitrogen, ammonia total [as N]30-day average≤ 13.6 lb/dDec
Nitrogen, ammonia total [as N]30-day average≤ 7.2 lb/dJun
Nitrogen, ammonia total [as N]daily maximum≤ 48.1 lb/dJan
Nitrogen, ammonia total [as N]daily maximum≤ 44.3 lb/dOct
Nitrogen, ammonia total [as N]daily maximum≤ 44.3 lb/dSep
Nitrogen, ammonia total [as N]daily maximum≤ 37.6 lb/dNov
Nitrogen, ammonia total [as N]daily maximum≤ 40.9 lb/dAug
Nitrogen, ammonia total [as N]daily maximum≤ 31.7 lb/dMay
Nitrogen, ammonia total [as N]daily maximum≤ 41.1 lb/dFeb
Nitrogen, ammonia total [as N]daily maximum≤ 28.9 lb/dApr
Nitrogen, ammonia total [as N]daily maximum≤ 34.6 lb/dJul
Nitrogen, ammonia total [as N]daily maximum≤ 37.7 lb/dMar
Nitrogen, ammonia total [as N]daily maximum≤ 44.3 lb/dDec
Nitrogen, ammonia total [as N]daily maximum≤ 34.6 lb/dJun
Chlorine, total residual30-day average≤ .015 mg/Lall year
Chlorine, total residualdaily maximum≤ .02 mg/Lall year
Chlorine, total residual30-day average≤ .0209 lb/dall year
Chlorine, total residualdaily maximum≤ .05 lb/dall year
E. coligeometric mean≤ 274 #/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≤ 64 lb/dall year
BOD, carbonaceous [5 day, 20 C]7-day average≤ 102 lb/dall year

How strict are these limits?

Cited limits by parameter: Iowa's rules and the federal ones.

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Your permit document is the final word. As JSON: /api/v1/permits/IA0058912 · MCP: https://passage-data.com/mcp