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City of Perry

Sewage treatment plant, major discharger, Perry, Iowa. NPDES permit IA0032379, 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 (20 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 12 reports late

Limits in force (64)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]daily minimum≥ 2.8 mg/Lall year
pHdaily minimum≥ 6.4 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspended30-day average≤ 30 mg/Lall year
Solids, total suspended7-day average≤ 45 mg/Lall year
Solids, total suspended30-day average≤ 1301 lb/dall year
Solids, total suspended7-day average≤ 1952 lb/dall year
Nitrogen, ammonia total [as N]30-day average≤ 11.5 mg/LNov
Nitrogen, ammonia total [as N]30-day average≤ 12.2 mg/LDec
Nitrogen, ammonia total [as N]30-day average≤ 5.2 mg/LSep
Nitrogen, ammonia total [as N]30-day average≤ 6.5 mg/LJun
Nitrogen, ammonia total [as N]30-day average≤ 7.7 mg/LOct
Nitrogen, ammonia total [as N]30-day average≤ 14.5 mg/LFeb
Nitrogen, ammonia total [as N]30-day average≤ 15.2 mg/LJan
Nitrogen, ammonia total [as N]30-day average≤ 10 mg/LMar
Nitrogen, ammonia total [as N]30-day average≤ 7.5 mg/LApr
Nitrogen, ammonia total [as N]30-day average≤ 4.9 mg/LJul
Nitrogen, ammonia total [as N]30-day average≤ 4.7 mg/LAug
Nitrogen, ammonia total [as N]30-day average≤ 8.6 mg/LMay
Nitrogen, ammonia total [as N]daily maximum≤ 14.3 mg/LNov
Nitrogen, ammonia total [as N]daily maximum≤ 15.5 mg/LDec
Nitrogen, ammonia total [as N]daily maximum≤ 16.1 mg/LSep
Nitrogen, ammonia total [as N]daily maximum≤ 14.3 mg/LJun
Nitrogen, ammonia total [as N]daily maximum≤ 15.3 mg/LOct
Nitrogen, ammonia total [as N]daily maximum≤ 14.5 mg/LFeb
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≤ 15.3 mg/LApr
Nitrogen, ammonia total [as N]daily maximum≤ 17.3 mg/LJul
Nitrogen, ammonia total [as N]daily maximum≤ 16 mg/LAug
Nitrogen, ammonia total [as N]daily maximum≤ 15 mg/LMay
Nitrogen, ammonia total [as N]30-day average≤ 240.2 lb/dNov
Nitrogen, ammonia total [as N]30-day average≤ 255.7 lb/dDec
Nitrogen, ammonia total [as N]30-day average≤ 108.7 lb/dSep
Nitrogen, ammonia total [as N]30-day average≤ 135 lb/dJun
Nitrogen, ammonia total [as N]30-day average≤ 160.7 lb/dOct
Nitrogen, ammonia total [as N]30-day average≤ 406.3 lb/dFeb
Nitrogen, ammonia total [as N]30-day average≤ 353.1 lb/dJan
Nitrogen, ammonia total [as N]30-day average≤ 210.9 lb/dMar
Nitrogen, ammonia total [as N]30-day average≤ 156.8 lb/dApr
Nitrogen, ammonia total [as N]30-day average≤ 103.4 lb/dJul
Nitrogen, ammonia total [as N]30-day average≤ 98.1 lb/dAug
Nitrogen, ammonia total [as N]30-day average≤ 179.1 lb/dMay
Nitrogen, ammonia total [as N]daily maximum≤ 579.7 lb/dNov
Nitrogen, ammonia total [as N]daily maximum≤ 629.6 lb/dDec
Nitrogen, ammonia total [as N]daily maximum≤ 650.5 lb/dSep
Nitrogen, ammonia total [as N]daily maximum≤ 572.7 lb/dJun
Nitrogen, ammonia total [as N]daily maximum≤ 619.4 lb/dOct
Nitrogen, ammonia total [as N]daily maximum≤ 570.4 lb/dFeb
Nitrogen, ammonia total [as N]daily maximum≤ 605.1 lb/dJan
Nitrogen, ammonia total [as N]daily maximum≤ 585.1 lb/dMar
Nitrogen, ammonia total [as N]daily maximum≤ 619.4 lb/dApr
Nitrogen, ammonia total [as N]daily maximum≤ 695.9 lb/dJul
Nitrogen, ammonia total [as N]daily maximum≤ 642.5 lb/dAug
Nitrogen, ammonia total [as N]daily maximum≤ 601.8 lb/dMay
Nitrogen, Kjeldahl, total [as N]30-day average≤ 1885 lb/dall year
Nitrogen, Kjeldahl, total [as N]daily maximum≤ 3085 lb/dall year
E. coligeometric mean≤ 126 #/100mLMar–Nov
Toxicity [acute], Ceriodaphnia dubiadaily maximum≤ 1 N=0;Y=1all year
Toxicity [acute], Pimephales promelas [Fathead Minnow]daily maximum≤ 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≤ 1084 lb/dall year
BOD, carbonaceous [5 day, 20 C]7-day average≤ 1735 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/IA0032379 · MCP: https://passage-data.com/mcp