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Marshalltown Estates MHC LLC

Mobile Home Site Operators, Marshalltown, Iowa. NPDES permit IA0068659, in force until Nov 30, 2026. Last 12 months: over a limit once (last January 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (15 values)
Renewal application due
Jun 3, 2026 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
4 values over a limit, 0 required values missing, 0 of 12 reports late

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

Period endingParameterReportedLimitOver by
January 2026BOD, carbonaceous [5 day, 20 C], 30-day average5.85468≤ 4 lb/d46%

Limits in force (59)

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
Solids, total suspended30-day average≤ 13 lb/dall year
Solids, total suspended7-day average≤ 20 lb/dall year
Nitrogen, ammonia total [as N]30-day average≤ 3.4 mg/LSep
Nitrogen, ammonia total [as N]30-day average≤ 3.8 mg/LMay
Nitrogen, ammonia total [as N]30-day average≤ 4.8 mg/LMar
Nitrogen, ammonia total [as N]30-day average≤ 14.1 mg/LJan
Nitrogen, ammonia total [as N]30-day average≤ 9.8 mg/LFeb
Nitrogen, ammonia total [as N]30-day average≤ 3.1 mg/LAug
Nitrogen, ammonia total [as N]30-day average≤ 4.6 mg/LDec
Nitrogen, ammonia total [as N]30-day average≤ 5.3 mg/LApr
Nitrogen, ammonia total [as N]30-day average≤ 3.4 mg/LJul
Nitrogen, ammonia total [as N]30-day average≤ 3.4 mg/LOct
Nitrogen, ammonia total [as N]30-day average≤ 3.2 mg/LJun
Nitrogen, ammonia total [as N]30-day average≤ 3.3 mg/LNov
Nitrogen, ammonia total [as N]daily maximum≤ 3.4 mg/LSep
Nitrogen, ammonia total [as N]daily maximum≤ 3.8 mg/LMay
Nitrogen, ammonia total [as N]daily maximum≤ 4.8 mg/LMar
Nitrogen, ammonia total [as N]daily maximum≤ 21.1 mg/LJan
Nitrogen, ammonia total [as N]daily maximum≤ 9.8 mg/LFeb
Nitrogen, ammonia total [as N]daily maximum≤ 3.2 mg/LAug
Nitrogen, ammonia total [as N]daily maximum≤ 4.6 mg/LDec
Nitrogen, ammonia total [as N]daily maximum≤ 5.3 mg/LApr
Nitrogen, ammonia total [as N]daily maximum≤ 3.9 mg/LJul
Nitrogen, ammonia total [as N]daily maximum≤ 3.4 mg/LOct
Nitrogen, ammonia total [as N]daily maximum≤ 3.8 mg/LJun
Nitrogen, ammonia total [as N]daily maximum≤ 3.3 mg/LNov
Nitrogen, ammonia total [as N]30-day average≤ .6 lb/dSep
Nitrogen, ammonia total [as N]30-day average≤ .6 lb/dMay
Nitrogen, ammonia total [as N]30-day average≤ .8 lb/dMar
Nitrogen, ammonia total [as N]30-day average≤ 2.4 lb/dJan
Nitrogen, ammonia total [as N]30-day average≤ 1.6 lb/dFeb
Nitrogen, ammonia total [as N]30-day average≤ .5 lb/dAug
Nitrogen, ammonia total [as N]30-day average≤ .8 lb/dDec
Nitrogen, ammonia total [as N]30-day average≤ .9 lb/dApr
Nitrogen, ammonia total [as N]30-day average≤ .6 lb/dJul
Nitrogen, ammonia total [as N]30-day average≤ .6 lb/dOct
Nitrogen, ammonia total [as N]30-day average≤ .5 lb/dJun
Nitrogen, ammonia total [as N]30-day average≤ .5 lb/dNov
Nitrogen, ammonia total [as N]daily maximum≤ .6 lb/dSep
Nitrogen, ammonia total [as N]daily maximum≤ .6 lb/dMay
Nitrogen, ammonia total [as N]daily maximum≤ .8 lb/dMar
Nitrogen, ammonia total [as N]daily maximum≤ 3.5 lb/dJan
Nitrogen, ammonia total [as N]daily maximum≤ 1.6 lb/dFeb
Nitrogen, ammonia total [as N]daily maximum≤ .5 lb/dAug
Nitrogen, ammonia total [as N]daily maximum≤ .8 lb/dDec
Nitrogen, ammonia total [as N]daily maximum≤ .9 lb/dApr
Nitrogen, ammonia total [as N]daily maximum≤ .6 lb/dJul
Nitrogen, ammonia total [as N]daily maximum≤ .6 lb/dOct
Nitrogen, ammonia total [as N]daily maximum≤ .6 lb/dJun
Nitrogen, ammonia total [as N]daily maximum≤ .5 lb/dNov
E. coligeometric mean≤ 126 #/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
BOD, carbonaceous [5 day, 20 C]30-day average≤ 4 lb/dall year
BOD, carbonaceous [5 day, 20 C]7-day average≤ 7 lb/dall year

How strict are these limits?

Cited limits by parameter: Iowa's rules and the federal ones.

Same industry: the 53 Real Estate permits in Iowa.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/IA0068659 · MCP: https://passage-data.com/mcp