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City of Arlington

Sewage treatment plant, Arlington, Iowa. NPDES permit IA0027383, in force until Jun 30, 2029. Last 12 months: over a limit once (last October 2025). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (10 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 2 required values missing, 0 of 12 reports late

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

Period endingParameterReportedLimit
October 2025pH, daily maximum9.15≤ 9 SU

Limits in force (54)

ParameterStatisticLimitMonths
pHdaily minimum≥ 6.5 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≤ 2.9 mg/LJan
Nitrogen, ammonia total [as N]30-day average≤ 2.7 mg/LNov
Nitrogen, ammonia total [as N]30-day average≤ 1.1 mg/LSep
Nitrogen, ammonia total [as N]30-day average≤ 1 mg/LAug
Nitrogen, ammonia total [as N]30-day average≤ 3 mg/LFeb
Nitrogen, ammonia total [as N]30-day average≤ 2 mg/LOct
Nitrogen, ammonia total [as N]30-day average≤ 3 mg/LMar
Nitrogen, ammonia total [as N]30-day average≤ 1.1 mg/LJul
Nitrogen, ammonia total [as N]30-day average≤ 2.4 mg/LApr
Nitrogen, ammonia total [as N]30-day average≤ 3.2 mg/LDec
Nitrogen, ammonia total [as N]30-day average≤ 2.7 mg/LMay
Nitrogen, ammonia total [as N]30-day average≤ 2.1 mg/LJun
Nitrogen, ammonia total [as N]daily maximum≤ 16.3 mg/LJan
Nitrogen, ammonia total [as N]daily maximum≤ 2.7 mg/LNov
Nitrogen, ammonia total [as N]daily maximum≤ 2.7 mg/LSep
Nitrogen, ammonia total [as N]daily maximum≤ 2.7 mg/LAug
Nitrogen, ammonia total [as N]daily maximum≤ 7.5 mg/LFeb
Nitrogen, ammonia total [as N]daily maximum≤ 2.7 mg/LOct
Nitrogen, ammonia total [as N]daily maximum≤ 3.9 mg/LMar
Nitrogen, ammonia total [as N]daily maximum≤ 3.2 mg/LJul
Nitrogen, ammonia total [as N]daily maximum≤ 4.8 mg/LApr
Nitrogen, ammonia total [as N]daily maximum≤ 3.9 mg/LDec
Nitrogen, ammonia total [as N]daily maximum≤ 3.3 mg/LMay
Nitrogen, ammonia total [as N]daily maximum≤ 3.3 mg/LJun
Nitrogen, ammonia total [as N]30-day average≤ 17.8 lb/dJan
Nitrogen, ammonia total [as N]30-day average≤ 16.9 lb/dNov
Nitrogen, ammonia total [as N]30-day average≤ 7.2 lb/dSep
Nitrogen, ammonia total [as N]30-day average≤ 6.5 lb/dAug
Nitrogen, ammonia total [as N]30-day average≤ 18.6 lb/dFeb
Nitrogen, ammonia total [as N]30-day average≤ 12.6 lb/dOct
Nitrogen, ammonia total [as N]30-day average≤ 18.8 lb/dMar
Nitrogen, ammonia total [as N]30-day average≤ 6.8 lb/dJul
Nitrogen, ammonia total [as N]30-day average≤ 15 lb/dApr
Nitrogen, ammonia total [as N]30-day average≤ 20 lb/dDec
Nitrogen, ammonia total [as N]30-day average≤ 17.2 lb/dMay
Nitrogen, ammonia total [as N]30-day average≤ 12.9 lb/dJun
Nitrogen, ammonia total [as N]daily maximum≤ 101.7 lb/dJan
Nitrogen, ammonia total [as N]daily maximum≤ 16.9 lb/dNov
Nitrogen, ammonia total [as N]daily maximum≤ 16.7 lb/dSep
Nitrogen, ammonia total [as N]daily maximum≤ 16.7 lb/dAug
Nitrogen, ammonia total [as N]daily maximum≤ 47 lb/dFeb
Nitrogen, ammonia total [as N]daily maximum≤ 16.9 lb/dOct
Nitrogen, ammonia total [as N]daily maximum≤ 24.5 lb/dMar
Nitrogen, ammonia total [as N]daily maximum≤ 20.2 lb/dJul
Nitrogen, ammonia total [as N]daily maximum≤ 30 lb/dApr
Nitrogen, ammonia total [as N]daily maximum≤ 24.6 lb/dDec
Nitrogen, ammonia total [as N]daily maximum≤ 20.6 lb/dMay
Nitrogen, ammonia total [as N]daily maximum≤ 20.6 lb/dJun
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.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/IA0027383 · MCP: https://passage-data.com/mcp