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City of Urbana

Sewage treatment plant, Urbana, Iowa. NPDES permit IA0059072, in force until Feb 28, 2031. Last 12 months: over a limit 2 times (last March 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 16 days after each period: form A monthly (36 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
1 value over a limit, 18 required values missing, 1 of 12 reports late

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

Period endingParameterReportedLimitOver by
October 2025pH, daily minimum6≥ 6.5 SU—
March 2026Chloride [as Cl], 30-day average443≤ 409 mg/L8%

Limits in force (80)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]daily minimum≥ 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 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≤ 120 lb/dall year
Solids, total suspended7-day average≤ 180 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, total [as N]30-day average≤ 52.3 lb/dall year
Nitrogen, total [as N]daily maximum≤ 85.5 lb/dall year
Nitrogen, ammonia total [as N]30-day average≤ 1.3 mg/LSep
Nitrogen, ammonia total [as N]30-day average≤ 1.9 mg/LApr
Nitrogen, ammonia total [as N]30-day average≤ 1.2 mg/LJul
Nitrogen, ammonia total [as N]30-day average≤ 4.2 mg/LJan
Nitrogen, ammonia total [as N]30-day average≤ 3.1 mg/LDec
Nitrogen, ammonia total [as N]30-day average≤ 1.6 mg/LJun
Nitrogen, ammonia total [as N]30-day average≤ 4.2 mg/LMar
Nitrogen, ammonia total [as N]30-day average≤ 2.1 mg/LMay
Nitrogen, ammonia total [as N]30-day average≤ 1.2 mg/LAug
Nitrogen, ammonia total [as N]30-day average≤ 4.9 mg/LFeb
Nitrogen, ammonia total [as N]30-day average≤ 1.9 mg/LOct
Nitrogen, ammonia total [as N]30-day average≤ 2.9 mg/LNov
Nitrogen, ammonia total [as N]daily maximum≤ 8.7 mg/LSep
Nitrogen, ammonia total [as N]daily maximum≤ 7.2 mg/LApr
Nitrogen, ammonia total [as N]daily maximum≤ 7.2 mg/LJul
Nitrogen, ammonia total [as N]daily maximum≤ 12.4 mg/LJan
Nitrogen, ammonia total [as N]daily maximum≤ 8.7 mg/LDec
Nitrogen, ammonia total [as N]daily maximum≤ 7.2 mg/LJun
Nitrogen, ammonia total [as N]daily maximum≤ 10.4 mg/LMar
Nitrogen, ammonia total [as N]daily maximum≤ 7.2 mg/LMay
Nitrogen, ammonia total [as N]daily maximum≤ 6 mg/LAug
Nitrogen, ammonia total [as N]daily maximum≤ 14.4 mg/LFeb
Nitrogen, ammonia total [as N]daily maximum≤ 8.7 mg/LOct
Nitrogen, ammonia total [as N]daily maximum≤ 7.2 mg/LNov
Nitrogen, ammonia total [as N]30-day average≤ 4.8 lb/dSep
Nitrogen, ammonia total [as N]30-day average≤ 6.9 lb/dApr
Nitrogen, ammonia total [as N]30-day average≤ 4.6 lb/dJul
Nitrogen, ammonia total [as N]30-day average≤ 15.5 lb/dJan
Nitrogen, ammonia total [as N]30-day average≤ 11.3 lb/dDec
Nitrogen, ammonia total [as N]30-day average≤ 6 lb/dJun
Nitrogen, ammonia total [as N]30-day average≤ 15.5 lb/dMar
Nitrogen, ammonia total [as N]30-day average≤ 7.9 lb/dMay
Nitrogen, ammonia total [as N]30-day average≤ 4.4 lb/dAug
Nitrogen, ammonia total [as N]30-day average≤ 18 lb/dFeb
Nitrogen, ammonia total [as N]30-day average≤ 7.1 lb/dOct
Nitrogen, ammonia total [as N]30-day average≤ 10.6 lb/dNov
Nitrogen, ammonia total [as N]daily maximum≤ 34.7 lb/dSep
Nitrogen, ammonia total [as N]daily maximum≤ 28.9 lb/dApr
Nitrogen, ammonia total [as N]daily maximum≤ 28.9 lb/dJul
Nitrogen, ammonia total [as N]daily maximum≤ 49.6 lb/dJan
Nitrogen, ammonia total [as N]daily maximum≤ 34.7 lb/dDec
Nitrogen, ammonia total [as N]daily maximum≤ 28.9 lb/dJun
Nitrogen, ammonia total [as N]daily maximum≤ 41.6 lb/dMar
Nitrogen, ammonia total [as N]daily maximum≤ 28.9 lb/dMay
Nitrogen, ammonia total [as N]daily maximum≤ 24 lb/dAug
Nitrogen, ammonia total [as N]daily maximum≤ 57.3 lb/dFeb
Nitrogen, ammonia total [as N]daily maximum≤ 34.7 lb/dOct
Nitrogen, ammonia total [as N]daily maximum≤ 28.9 lb/dNov
Nitrogen, Kjeldahl, total [as N]30-day averagereport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]30-day averagereport only (lb/d)all year
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (lb/d)all year
Chloride [as Cl]30-day average≤ 409 mg/Lall year
Chloride [as Cl]daily maximum≤ 632 mg/Lall year
Chloride [as Cl]30-day average≤ 1604 lb/dall year
Chloride [as Cl]daily maximum≤ 2525 lb/dall year
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≤ 100 lb/dall year
BOD, carbonaceous [5 day, 20 C]7-day average≤ 160 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/IA0059072 · MCP: https://passage-data.com/mcp