Passage Data · Check a report · Use it from your AI

City of Frederika

Sewage treatment plant, Frederika, Iowa. NPDES permit IA0058939, in force until May 31, 2030. 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 (11 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
1 value over a limit, 0 required values missing, 0 of 12 reports late

Limits in force (55)

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
Nitrogen, ammonia total [as N]30-day average≤ 5.4 mg/LDec
Nitrogen, ammonia total [as N]30-day average≤ 4.5 mg/LAug
Nitrogen, ammonia total [as N]30-day average≤ 4.2 mg/LSep
Nitrogen, ammonia total [as N]30-day average≤ 5 mg/LJul
Nitrogen, ammonia total [as N]30-day average≤ 22 mg/LJan
Nitrogen, ammonia total [as N]30-day average≤ 11 mg/LFeb
Nitrogen, ammonia total [as N]30-day average≤ 12.6 mg/LJun
Nitrogen, ammonia total [as N]30-day average≤ 4.1 mg/LNov
Nitrogen, ammonia total [as N]30-day average≤ 6.1 mg/LMar
Nitrogen, ammonia total [as N]30-day average≤ 12.5 mg/LMay
Nitrogen, ammonia total [as N]30-day average≤ 12.3 mg/LApr
Nitrogen, ammonia total [as N]30-day average≤ 4.1 mg/LOct
Nitrogen, ammonia total [as N]daily maximum≤ 5.4 mg/LDec
Nitrogen, ammonia total [as N]daily maximum≤ 4.5 mg/LAug
Nitrogen, ammonia total [as N]daily maximum≤ 4.2 mg/LSep
Nitrogen, ammonia total [as N]daily maximum≤ 5 mg/LJul
Nitrogen, ammonia total [as N]daily maximum≤ 22.9 mg/LJan
Nitrogen, ammonia total [as N]daily maximum≤ 11 mg/LFeb
Nitrogen, ammonia total [as N]daily maximum≤ 12.6 mg/LJun
Nitrogen, ammonia total [as N]daily maximum≤ 4.1 mg/LNov
Nitrogen, ammonia total [as N]daily maximum≤ 6.1 mg/LMar
Nitrogen, ammonia total [as N]daily maximum≤ 12.5 mg/LMay
Nitrogen, ammonia total [as N]daily maximum≤ 12.3 mg/LApr
Nitrogen, ammonia total [as N]daily maximum≤ 4.1 mg/LOct
Nitrogen, ammonia total [as N]30-day average≤ 24.1 lb/dDec
Nitrogen, ammonia total [as N]30-day average≤ 20.3 lb/dAug
Nitrogen, ammonia total [as N]30-day average≤ 18.7 lb/dSep
Nitrogen, ammonia total [as N]30-day average≤ 22.7 lb/dJul
Nitrogen, ammonia total [as N]30-day average≤ 98.9 lb/dJan
Nitrogen, ammonia total [as N]30-day average≤ 49.6 lb/dFeb
Nitrogen, ammonia total [as N]30-day average≤ 56.7 lb/dJun
Nitrogen, ammonia total [as N]30-day average≤ 18.6 lb/dNov
Nitrogen, ammonia total [as N]30-day average≤ 27.3 lb/dMar
Nitrogen, ammonia total [as N]30-day average≤ 56.5 lb/dMay
Nitrogen, ammonia total [as N]30-day average≤ 55.5 lb/dApr
Nitrogen, ammonia total [as N]30-day average≤ 18.7 lb/dOct
Nitrogen, ammonia total [as N]daily maximum≤ 24.1 lb/dDec
Nitrogen, ammonia total [as N]daily maximum≤ 20.3 lb/dAug
Nitrogen, ammonia total [as N]daily maximum≤ 18.7 lb/dSep
Nitrogen, ammonia total [as N]daily maximum≤ 22.7 lb/dJul
Nitrogen, ammonia total [as N]daily maximum≤ 103.1 lb/dJan
Nitrogen, ammonia total [as N]daily maximum≤ 49.6 lb/dFeb
Nitrogen, ammonia total [as N]daily maximum≤ 56.7 lb/dJun
Nitrogen, ammonia total [as N]daily maximum≤ 18.6 lb/dNov
Nitrogen, ammonia total [as N]daily maximum≤ 27.3 lb/dMar
Nitrogen, ammonia total [as N]daily maximum≤ 56.5 lb/dMay
Nitrogen, ammonia total [as N]daily maximum≤ 55.5 lb/dApr
Nitrogen, ammonia total [as N]daily maximum≤ 18.7 lb/dOct
E. coligeometric mean≤ 128 #/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

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

· Save this facility as a site · Superfund sites nearby · Your permits on one board

On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/IA0058939 · MCP: https://passage-data.com/mcp