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City of Kimballton

Sewage treatment plant, Kimballton, Iowa. NPDES permit IA0025372, in force until Mar 31, 2028. Last 12 months: over a limit 6 times (last January 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (26 values)
Renewal application due
Oct 3, 2027 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
6 values over a limit, 0 required values missing, 1 of 12 reports late

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

Period endingParameterReportedLimitOver by
October 2025Oxygen, dissolved [DO], daily minimum.9≥ 2.9 mg/L69%
November 2025Oxygen, dissolved [DO], daily minimum.8≥ 2.9 mg/L72%
December 2025Oxygen, dissolved [DO], daily minimum1.1≥ 2.9 mg/L62%
January 2026BOD, carbonaceous [5 day, 20 C], 7-day average16.22213≤ 16 lb/d1%
January 2026BOD, carbonaceous [5 day, 20 C], 7-day average49.2≤ 40 mg/L23%
January 2026Oxygen, dissolved [DO], daily minimum1.5≥ 2.9 mg/L48%

Limits in force (70)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]daily minimum≥ 2.9 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≥ 6.4 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≤ 80 mg/Lall year
Solids, total suspended7-day average≤ 120 mg/Lall year
Solids, total suspended30-day average≤ 33 lb/dall year
Solids, total suspended7-day average≤ 50 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≤ 3.4 mg/LApr
Nitrogen, ammonia total [as N]30-day average≤ 7.6 mg/LJan
Nitrogen, ammonia total [as N]30-day average≤ 2.3 mg/LSep
Nitrogen, ammonia total [as N]30-day average≤ 3.1 mg/LNov
Nitrogen, ammonia total [as N]30-day average≤ 2.9 mg/LJun
Nitrogen, ammonia total [as N]30-day average≤ 8.7 mg/LFeb
Nitrogen, ammonia total [as N]30-day average≤ 3.1 mg/LOct
Nitrogen, ammonia total [as N]30-day average≤ 2.1 mg/LAug
Nitrogen, ammonia total [as N]30-day average≤ 4.5 mg/LMar
Nitrogen, ammonia total [as N]30-day average≤ 4.3 mg/LDec
Nitrogen, ammonia total [as N]30-day average≤ 2.2 mg/LJul
Nitrogen, ammonia total [as N]30-day average≤ 3.7 mg/LMay
Nitrogen, ammonia total [as N]daily maximum≤ 5.1 mg/LApr
Nitrogen, ammonia total [as N]daily maximum≤ 20.7 mg/LJan
Nitrogen, ammonia total [as N]daily maximum≤ 3.1 mg/LSep
Nitrogen, ammonia total [as N]daily maximum≤ 3.1 mg/LNov
Nitrogen, ammonia total [as N]daily maximum≤ 3.7 mg/LJun
Nitrogen, ammonia total [as N]daily maximum≤ 9.1 mg/LFeb
Nitrogen, ammonia total [as N]daily maximum≤ 3.1 mg/LOct
Nitrogen, ammonia total [as N]daily maximum≤ 3.1 mg/LAug
Nitrogen, ammonia total [as N]daily maximum≤ 4.5 mg/LMar
Nitrogen, ammonia total [as N]daily maximum≤ 4.3 mg/LDec
Nitrogen, ammonia total [as N]daily maximum≤ 3.7 mg/LJul
Nitrogen, ammonia total [as N]daily maximum≤ 3.7 mg/LMay
Nitrogen, ammonia total [as N]30-day average≤ 1.4 lb/dApr
Nitrogen, ammonia total [as N]30-day average≤ 3.2 lb/dJan
Nitrogen, ammonia total [as N]30-day average≤ 1 lb/dSep
Nitrogen, ammonia total [as N]30-day average≤ 1.3 lb/dNov
Nitrogen, ammonia total [as N]30-day average≤ 1.2 lb/dJun
Nitrogen, ammonia total [as N]30-day average≤ 3.6 lb/dFeb
Nitrogen, ammonia total [as N]30-day average≤ 1.3 lb/dOct
Nitrogen, ammonia total [as N]30-day average≤ .9 lb/dAug
Nitrogen, ammonia total [as N]30-day average≤ 1.9 lb/dMar
Nitrogen, ammonia total [as N]30-day average≤ 1.8 lb/dDec
Nitrogen, ammonia total [as N]30-day average≤ .9 lb/dJul
Nitrogen, ammonia total [as N]30-day average≤ 1.5 lb/dMay
Nitrogen, ammonia total [as N]daily maximum≤ 2.1 lb/dApr
Nitrogen, ammonia total [as N]daily maximum≤ 8.6 lb/dJan
Nitrogen, ammonia total [as N]daily maximum≤ 1.3 lb/dSep
Nitrogen, ammonia total [as N]daily maximum≤ 1.3 lb/dNov
Nitrogen, ammonia total [as N]daily maximum≤ 1.5 lb/dJun
Nitrogen, ammonia total [as N]daily maximum≤ 3.8 lb/dFeb
Nitrogen, ammonia total [as N]daily maximum≤ 1.3 lb/dOct
Nitrogen, ammonia total [as N]daily maximum≤ 1.3 lb/dAug
Nitrogen, ammonia total [as N]daily maximum≤ 1.9 lb/dMar
Nitrogen, ammonia total [as N]daily maximum≤ 1.8 lb/dDec
Nitrogen, ammonia total [as N]daily maximum≤ 1.5 lb/dJul
Nitrogen, ammonia total [as N]daily maximum≤ 1.5 lb/dMay
E. coligeometric mean≤ 630 #/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≤ 10 lb/dall year
BOD, carbonaceous [5 day, 20 C]7-day average≤ 16 lb/dall year

How strict are these limits?

Cited limits by parameter: Iowa'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/IA0025372 · MCP: https://passage-data.com/mcp