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City of Blencoe

Sewage treatment plant, Blencoe, Iowa. NPDES permit IA0042889 expired Dec 31, 2016; its limits still apply. 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 (23 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 12 reports late

Limits in force (36)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]daily minimum≥ 4.2 mg/LJul
Oxygen, dissolved [DO]daily minimumreport only (mg/L)Sep
BOD, 5-day, 20 deg. C30-day averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all year
BOD, 5-day, 20 deg. C30-day averagereport only (lb/d)all year
BOD, 5-day, 20 deg. Cdaily maximumreport only (lb/d)all year
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≤ 30 lb/dall year
Solids, total suspended7-day average≤ 45 lb/dall year
Solids, total suspended30-day averagereport only (mg/L)all year
Solids, total suspendeddaily maximumreport only (mg/L)all year
Solids, total suspended30-day averagereport only (lb/d)all year
Solids, total suspendeddaily maximumreport only (lb/d)all year
Nitrogen, ammonia total [as N]30-day average≤ 37 mg/LJun
Nitrogen, ammonia total [as N]30-day average≤ 8.7 mg/LJul
Nitrogen, ammonia total [as N]30-day average≤ 8.7 mg/LAug
Nitrogen, ammonia total [as N]30-day average≤ 35.6 mg/LSep
Nitrogen, ammonia total [as N]daily maximum≤ 37 mg/LJun
Nitrogen, ammonia total [as N]daily maximum≤ 13 mg/LJul
Nitrogen, ammonia total [as N]daily maximum≤ 13 mg/LAug
Nitrogen, ammonia total [as N]daily maximum≤ 35.6 mg/LSep
Nitrogen, ammonia total [as N]30-day average≤ 6.5 lb/dJun
Nitrogen, ammonia total [as N]30-day average≤ 3.2 lb/dJul
Nitrogen, ammonia total [as N]30-day average≤ 3.2 lb/dAug
Nitrogen, ammonia total [as N]30-day average≤ 6.5 lb/dSep
Nitrogen, ammonia total [as N]daily maximum≤ 6.5 lb/dJun
Nitrogen, ammonia total [as N]daily maximum≤ 4.8 lb/dJul
Nitrogen, ammonia total [as N]daily maximum≤ 4.8 lb/dAug
Nitrogen, ammonia total [as N]daily maximum≤ 6.5 lb/dSep
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≤ 9 lb/dall year
BOD, carbonaceous [5 day, 20 C]7-day average≤ 15 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/IA0042889 · MCP: https://passage-data.com/mcp