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City of La Motte

Sewage treatment plant, La Motte, Iowa. NPDES permit IA0056707, in force until Oct 31, 2030. Last 12 months: no values over a limit, 4 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (6 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 (6)

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
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

New limits from Oct 1, 2030

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Nitrogen, ammonia total [as N], 30-day average5.3 lb/d (Sep)new——
Nitrogen, ammonia total [as N], 30-day average7.6 lb/d (Apr)new——
Nitrogen, ammonia total [as N], 30-day average5 lb/d (Jul)new——
Nitrogen, ammonia total [as N], 30-day average6.6 lb/d (Jun)new——
Nitrogen, ammonia total [as N], 30-day average1.1 mg/L (Sep)new——
Nitrogen, ammonia total [as N], 30-day average1 mg/L (Jul)new——
Nitrogen, ammonia total [as N], 30-day average1.5 mg/L (Apr)new——
Nitrogen, ammonia total [as N], 30-day average1.3 mg/L (Jun)new——
Nitrogen, ammonia total [as N], 30-day average4 mg/L (Feb)new——
Nitrogen, ammonia total [as N], 30-day average19.8 lb/d (Feb)new——
Nitrogen, ammonia total [as N], 30-day average1.7 mg/L (May)new——
Nitrogen, ammonia total [as N], 30-day average8.7 lb/d (May)new——
Nitrogen, ammonia total [as N], 30-day average2.3 mg/L (Nov)new——
Nitrogen, ammonia total [as N], 30-day average11.6 lb/d (Nov)new——
Nitrogen, ammonia total [as N], 30-day average2.5 mg/L (Dec)new——
Nitrogen, ammonia total [as N], 30-day average12.4 lb/d (Dec)new——
Nitrogen, ammonia total [as N], 30-day average4.8 lb/d (Aug)new——
Nitrogen, ammonia total [as N], 30-day average1 mg/L (Aug)new——
Nitrogen, ammonia total [as N], 30-day average3.4 mg/L (Jan)new——
Nitrogen, ammonia total [as N], 30-day average17 lb/d (Jan)new——
Nitrogen, ammonia total [as N], 30-day average17 lb/d (Mar)new——
Nitrogen, ammonia total [as N], 30-day average3.4 mg/L (Mar)new——
Nitrogen, ammonia total [as N], 30-day average1.6 mg/L (Oct)new——
Nitrogen, ammonia total [as N], 30-day average7.8 lb/d (Oct)new——
Nitrogen, ammonia total [as N], daily maximum42.1 lb/d (Feb)new——
Nitrogen, ammonia total [as N], daily maximum16 lb/d (Jul)new——
Nitrogen, ammonia total [as N], daily maximum4.7 mg/L (Apr)new——
Nitrogen, ammonia total [as N], daily maximum16 lb/d (Jun)new——
Nitrogen, ammonia total [as N], daily maximum3.2 mg/L (Jun)new——
Nitrogen, ammonia total [as N], daily maximum2.7 mg/L (Sep)new——
Nitrogen, ammonia total [as N], daily maximum3.2 mg/L (Jul)new——
Nitrogen, ammonia total [as N], daily maximum8.4 mg/L (Feb)new——
Nitrogen, ammonia total [as N], daily maximum13.3 lb/d (Sep)new——
Nitrogen, ammonia total [as N], daily maximum23.6 lb/d (Apr)new——
Nitrogen, ammonia total [as N], daily maximum16 lb/d (May)new——
Nitrogen, ammonia total [as N], daily maximum3.2 mg/L (May)new——
Nitrogen, ammonia total [as N], daily maximum13.3 lb/d (Nov)new——
Nitrogen, ammonia total [as N], daily maximum2.7 mg/L (Nov)new——
Nitrogen, ammonia total [as N], daily maximum19.4 lb/d (Dec)new——
Nitrogen, ammonia total [as N], daily maximum3.9 mg/L (Dec)new——
Nitrogen, ammonia total [as N], daily maximum13.3 lb/d (Aug)new——
Nitrogen, ammonia total [as N], daily maximum2.7 mg/L (Aug)new——
Nitrogen, ammonia total [as N], daily maximum19.9 mg/L (Jan)new——
Nitrogen, ammonia total [as N], daily maximum99.5 lb/d (Jan)new——
Nitrogen, ammonia total [as N], daily maximum19.4 lb/d (Mar)new——
Nitrogen, ammonia total [as N], daily maximum3.9 mg/L (Mar)new——
Nitrogen, ammonia total [as N], daily maximum13.3 lb/d (Oct)new——
Nitrogen, ammonia total [as N], daily maximum2.7 mg/L (Oct)new——

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/IA0056707 · MCP: https://passage-data.com/mcp