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Marion County Rural Water District

Sewage treatment plant, Harvey, Iowa. NPDES permit IA0072338, in force until Feb 29, 2028. Last 12 months: over a limit 12 times (last September 2026), 4 of 12 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (17 values)
Renewal application due
Sep 2, 2027 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
9 values over a limit, 0 required values missing, 3 of 12 reports late

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

Period endingParameterReportedLimitOver by
December 2025Nitrogen, ammonia total [as N], 30-day average11.5≤ 2.5 mg/L360%
December 2025Nitrogen, ammonia total [as N], 30-day average8.28996≤ 4.3 lb/d93%
December 2025Nitrogen, ammonia total [as N], daily maximum10.5084≤ 6.8 lb/d55%
December 2025Nitrogen, ammonia total [as N], daily maximum12.6≤ 3.9 mg/L223%
June 2026Nitrogen, ammonia total [as N], 30-day average2.475≤ 1.3 mg/L90%
June 2026Nitrogen, ammonia total [as N], daily maximum4.85≤ 3.2 mg/L52%
June 2026pH, daily minimum.79≥ 6 SU—
September 2026E. coli, geometric mean1752.426≤ 129 #/100mL1258%
September 2026Nitrogen, ammonia total [as N], 30-day average6.225≤ 1.1 mg/L466%
September 2026Nitrogen, ammonia total [as N], 30-day average9.34497≤ 1.9 lb/d392%
September 2026Nitrogen, ammonia total [as N], daily maximum10.58346≤ 4.7 lb/d125%
September 2026Nitrogen, ammonia total [as N], daily maximum7.05≤ 2.7 mg/L161%

Limits in force (61)

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≤ 4 mg/LFeb
Nitrogen, ammonia total [as N]30-day average≤ 1.6 mg/LOct
Nitrogen, ammonia total [as N]30-day average≤ 3.4 mg/LJan
Nitrogen, ammonia total [as N]30-day average≤ 1 mg/LJul
Nitrogen, ammonia total [as N]30-day average≤ 1.3 mg/LJun
Nitrogen, ammonia total [as N]30-day average≤ 1 mg/LAug
Nitrogen, ammonia total [as N]30-day average≤ 1.7 mg/LMay
Nitrogen, ammonia total [as N]30-day average≤ 2.1 mg/LMar
Nitrogen, ammonia total [as N]30-day average≤ 2.3 mg/LNov
Nitrogen, ammonia total [as N]30-day average≤ 2.5 mg/LDec
Nitrogen, ammonia total [as N]30-day average≤ 1.5 mg/LApr
Nitrogen, ammonia total [as N]30-day average≤ 1.1 mg/LSep
Nitrogen, ammonia total [as N]daily maximum≤ 8.4 mg/LFeb
Nitrogen, ammonia total [as N]daily maximum≤ 2.7 mg/LOct
Nitrogen, ammonia total [as N]daily maximum≤ 12.3 mg/LJan
Nitrogen, ammonia total [as N]daily maximum≤ 3.2 mg/LJul
Nitrogen, ammonia total [as N]daily maximum≤ 3.2 mg/LJun
Nitrogen, ammonia total [as N]daily maximum≤ 2.7 mg/LAug
Nitrogen, ammonia total [as N]daily maximum≤ 3.2 mg/LMay
Nitrogen, ammonia total [as N]daily maximum≤ 3.9 mg/LMar
Nitrogen, ammonia total [as N]daily maximum≤ 2.7 mg/LNov
Nitrogen, ammonia total [as N]daily maximum≤ 3.9 mg/LDec
Nitrogen, ammonia total [as N]daily maximum≤ 4.7 mg/LApr
Nitrogen, ammonia total [as N]daily maximum≤ 2.7 mg/LSep
Nitrogen, ammonia total [as N]30-day average≤ 6.9 lb/dFeb
Nitrogen, ammonia total [as N]30-day average≤ 2.7 lb/dOct
Nitrogen, ammonia total [as N]30-day average≤ 6 lb/dJan
Nitrogen, ammonia total [as N]30-day average≤ 1.8 lb/dJul
Nitrogen, ammonia total [as N]30-day average≤ 2.3 lb/dJun
Nitrogen, ammonia total [as N]30-day average≤ 1.7 lb/dAug
Nitrogen, ammonia total [as N]30-day average≤ 3.1 lb/dMay
Nitrogen, ammonia total [as N]30-day average≤ 3.7 lb/dMar
Nitrogen, ammonia total [as N]30-day average≤ 4.1 lb/dNov
Nitrogen, ammonia total [as N]30-day average≤ 4.3 lb/dDec
Nitrogen, ammonia total [as N]30-day average≤ 2.7 lb/dApr
Nitrogen, ammonia total [as N]30-day average≤ 1.9 lb/dSep
Nitrogen, ammonia total [as N]daily maximum≤ 14.8 lb/dFeb
Nitrogen, ammonia total [as N]daily maximum≤ 4.7 lb/dOct
Nitrogen, ammonia total [as N]daily maximum≤ 21.5 lb/dJan
Nitrogen, ammonia total [as N]daily maximum≤ 5.7 lb/dJul
Nitrogen, ammonia total [as N]daily maximum≤ 5.7 lb/dJun
Nitrogen, ammonia total [as N]daily maximum≤ 4.7 lb/dAug
Nitrogen, ammonia total [as N]daily maximum≤ 5.6 lb/dMay
Nitrogen, ammonia total [as N]daily maximum≤ 6.8 lb/dMar
Nitrogen, ammonia total [as N]daily maximum≤ 4.7 lb/dNov
Nitrogen, ammonia total [as N]daily maximum≤ 6.8 lb/dDec
Nitrogen, ammonia total [as N]daily maximum≤ 8.3 lb/dApr
Nitrogen, ammonia total [as N]daily maximum≤ 4.7 lb/dSep
Chloride [as Cl]30-day average≤ 389 mg/Lall year
Chloride [as Cl]daily maximum≤ 629 mg/Lall year
Chloride [as Cl]30-day average≤ 681 lb/dall year
Chloride [as Cl]daily maximum≤ 1101 lb/dall year
E. coli30-day averagereport only (#/100mL)all year
E. coligeometric mean≤ 129 #/100mLMar–Nov
E. colidaily maximumreport only (#/100mL)all 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

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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/IA0072338 · MCP: https://passage-data.com/mcp