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City of Anamosa

Sewage treatment plant, major discharger, Anamosa, Iowa. NPDES permit IA0025895, in force until Mar 31, 2031. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (41 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
3 values over a limit, 4 required values missing, 0 of 12 reports late

Limits in force (85)

ParameterStatisticLimitMonths
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≤ 313 lb/dall year
Solids, total suspended7-day average≤ 469 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
Oil & Grease30-day average≤ 10 mg/Lall year
Oil & Greasedaily maximum≤ 15 mg/Lall year
Nitrogen, total [as N]30-day averagereport only (mg/L)all year
Nitrogen, total [as N]daily maximumreport only (mg/L)all year
Nitrogen, total [as N]30-day averagereport only (lb/d)all year
Nitrogen, total [as N]daily maximumreport only (lb/d)all year
Nitrogen, ammonia total [as N]30-day average≤ 3.4 mg/LNov
Nitrogen, ammonia total [as N]30-day average≤ 2.1 mg/LApr
Nitrogen, ammonia total [as N]30-day average≤ 2.8 mg/LOct
Nitrogen, ammonia total [as N]30-day average≤ 1.1 mg/LJul
Nitrogen, ammonia total [as N]30-day average≤ 1.5 mg/LSep
Nitrogen, ammonia total [as N]30-day average≤ 4 mg/LDec
Nitrogen, ammonia total [as N]30-day average≤ 5.2 mg/LJan
Nitrogen, ammonia total [as N]30-day average≤ 2.8 mg/LMar
Nitrogen, ammonia total [as N]30-day average≤ 1 mg/LAug
Nitrogen, ammonia total [as N]30-day average≤ 1.3 mg/LJun
Nitrogen, ammonia total [as N]30-day average≤ 1.8 mg/LMay
Nitrogen, ammonia total [as N]30-day average≤ 5.8 mg/LFeb
Nitrogen, ammonia total [as N]daily maximum≤ 14.7 mg/LNov
Nitrogen, ammonia total [as N]daily maximum≤ 15.7 mg/LApr
Nitrogen, ammonia total [as N]daily maximum≤ 15.7 mg/LOct
Nitrogen, ammonia total [as N]daily maximum≤ 17.6 mg/LJul
Nitrogen, ammonia total [as N]daily maximum≤ 16.5 mg/LSep
Nitrogen, ammonia total [as N]daily maximum≤ 16 mg/LDec
Nitrogen, ammonia total [as N]daily maximum≤ 15.2 mg/LJan
Nitrogen, ammonia total [as N]daily maximum≤ 14.7 mg/LMar
Nitrogen, ammonia total [as N]daily maximum≤ 16.3 mg/LAug
Nitrogen, ammonia total [as N]daily maximum≤ 14.5 mg/LJun
Nitrogen, ammonia total [as N]daily maximum≤ 15.2 mg/LMay
Nitrogen, ammonia total [as N]daily maximum≤ 14.2 mg/LFeb
Nitrogen, ammonia total [as N]30-day average≤ 35.6 lb/dNov
Nitrogen, ammonia total [as N]30-day average≤ 21.9 lb/dApr
Nitrogen, ammonia total [as N]30-day average≤ 29.3 lb/dOct
Nitrogen, ammonia total [as N]30-day average≤ 11.3 lb/dJul
Nitrogen, ammonia total [as N]30-day average≤ 15.5 lb/dSep
Nitrogen, ammonia total [as N]30-day average≤ 41.2 lb/dDec
Nitrogen, ammonia total [as N]30-day average≤ 53.9 lb/dJan
Nitrogen, ammonia total [as N]30-day average≤ 29.2 lb/dMar
Nitrogen, ammonia total [as N]30-day average≤ 10.3 lb/dAug
Nitrogen, ammonia total [as N]30-day average≤ 14.1 lb/dJun
Nitrogen, ammonia total [as N]30-day average≤ 19.2 lb/dMay
Nitrogen, ammonia total [as N]30-day average≤ 60.6 lb/dFeb
Nitrogen, ammonia total [as N]daily maximum≤ 153.3 lb/dNov
Nitrogen, ammonia total [as N]daily maximum≤ 163.9 lb/dApr
Nitrogen, ammonia total [as N]daily maximum≤ 164 lb/dOct
Nitrogen, ammonia total [as N]daily maximum≤ 183.8 lb/dJul
Nitrogen, ammonia total [as N]daily maximum≤ 172.3 lb/dSep
Nitrogen, ammonia total [as N]daily maximum≤ 166.6 lb/dDec
Nitrogen, ammonia total [as N]daily maximum≤ 158.5 lb/dJan
Nitrogen, ammonia total [as N]daily maximum≤ 153.3 lb/dMar
Nitrogen, ammonia total [as N]daily maximum≤ 169.6 lb/dAug
Nitrogen, ammonia total [as N]daily maximum≤ 150.9 lb/dJun
Nitrogen, ammonia total [as N]daily maximum≤ 158.6 lb/dMay
Nitrogen, ammonia total [as N]daily maximum≤ 148.1 lb/dFeb
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
Phosphorus, total [as P]30-day averagereport only (mg/L)all year
Phosphorus, total [as P]daily maximumreport only (mg/L)all year
Phosphorus, total [as P]30-day averagereport only (lb/d)all year
Phosphorus, total [as P]daily maximumreport only (lb/d)all year
E. coligeometric mean≤ 126 #/100mLMar–Nov
Toxicity [acute], Ceriodaphnia dubia30-day average≤ 1 N=0;Y=1all year
Toxicity [acute], Pimephales promelas [Fathead Minnow]30-day average≤ 1 N=0;Y=1all year
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≤ 261 lb/dall year
BOD, carbonaceous [5 day, 20 C]7-day average≤ 417 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/IA0025895 · MCP: https://passage-data.com/mcp