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City of Strawberry Point

Sewage treatment plant, Strawberry Point, Iowa. NPDES permit IA0042757, in force until Jul 31, 2030. Last 12 months: over a limit 2 times (last December 2025), 9 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (28 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
11 values over a limit, 7 required values missing, 0 of 12 reports late

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

Period endingParameterReportedLimitOver by
November 2025Nitrogen, ammonia total [as N], 30-day average2.6075≤ 2.2 mg/L19%
December 2025Nitrogen, ammonia total [as N], 30-day average7.114≤ 1.9 mg/L274%

Limits in force (73)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]daily minimum≥ 1 mg/Lall year
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
pH30-day averagereport only (SU)all year
pHdaily maximumreport only (SU)all year
Solids, total suspended30-day average≤ 30 mg/Lall year
Solids, total suspended7-day average≤ 45 mg/Lall year
Solids, total suspended30-day average≤ 145 lb/dall year
Solids, total suspended7-day average≤ 218 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
Oil & Grease30-day average≤ 10 mg/Lall year
Oil & Greasedaily maximum≤ 15 mg/Lall year
Nitrogen, ammonia total [as N]30-day average≤ 2.4 mg/LJun
Nitrogen, ammonia total [as N]30-day average≤ 2.2 mg/LMar
Nitrogen, ammonia total [as N]30-day average≤ 2.2 mg/LJan
Nitrogen, ammonia total [as N]30-day average≤ 1.6 mg/LMay
Nitrogen, ammonia total [as N]30-day average≤ 2.3 mg/LOct
Nitrogen, ammonia total [as N]30-day average≤ 1.9 mg/LJul
Nitrogen, ammonia total [as N]30-day average≤ 2.2 mg/LNov
Nitrogen, ammonia total [as N]30-day average≤ 2.3 mg/LSep
Nitrogen, ammonia total [as N]30-day average≤ 2 mg/LAug
Nitrogen, ammonia total [as N]30-day average≤ 1.9 mg/LDec
Nitrogen, ammonia total [as N]30-day average≤ 2.2 mg/LFeb
Nitrogen, ammonia total [as N]30-day average≤ 2.2 mg/LApr
Nitrogen, ammonia total [as N]daily maximum≤ 9.9 mg/LJun
Nitrogen, ammonia total [as N]daily maximum≤ 10.1 mg/LMar
Nitrogen, ammonia total [as N]daily maximum≤ 12.8 mg/LJan
Nitrogen, ammonia total [as N]daily maximum≤ 8.7 mg/LMay
Nitrogen, ammonia total [as N]daily maximum≤ 12.4 mg/LOct
Nitrogen, ammonia total [as N]daily maximum≤ 10.2 mg/LJul
Nitrogen, ammonia total [as N]daily maximum≤ 10.3 mg/LNov
Nitrogen, ammonia total [as N]daily maximum≤ 12.8 mg/LSep
Nitrogen, ammonia total [as N]daily maximum≤ 10.8 mg/LAug
Nitrogen, ammonia total [as N]daily maximum≤ 11.6 mg/LDec
Nitrogen, ammonia total [as N]daily maximum≤ 10.9 mg/LFeb
Nitrogen, ammonia total [as N]daily maximum≤ 7.8 mg/LApr
Nitrogen, ammonia total [as N]30-day average≤ 11 lb/dJun
Nitrogen, ammonia total [as N]30-day average≤ 10.4 lb/dMar
Nitrogen, ammonia total [as N]30-day average≤ 10.4 lb/dJan
Nitrogen, ammonia total [as N]30-day average≤ 7.8 lb/dMay
Nitrogen, ammonia total [as N]30-day average≤ 10.7 lb/dOct
Nitrogen, ammonia total [as N]30-day average≤ 8.8 lb/dJul
Nitrogen, ammonia total [as N]30-day average≤ 10.6 lb/dNov
Nitrogen, ammonia total [as N]30-day average≤ 10.9 lb/dSep
Nitrogen, ammonia total [as N]30-day average≤ 9.3 lb/dAug
Nitrogen, ammonia total [as N]30-day average≤ 8.9 lb/dDec
Nitrogen, ammonia total [as N]30-day average≤ 10.4 lb/dFeb
Nitrogen, ammonia total [as N]30-day average≤ 10.5 lb/dApr
Nitrogen, ammonia total [as N]daily maximum≤ 46.2 lb/dJun
Nitrogen, ammonia total [as N]daily maximum≤ 48 lb/dMar
Nitrogen, ammonia total [as N]daily maximum≤ 58.4 lb/dJan
Nitrogen, ammonia total [as N]daily maximum≤ 33 lb/dMay
Nitrogen, ammonia total [as N]daily maximum≤ 58.3 lb/dOct
Nitrogen, ammonia total [as N]daily maximum≤ 37.6 lb/dJul
Nitrogen, ammonia total [as N]daily maximum≤ 46.7 lb/dNov
Nitrogen, ammonia total [as N]daily maximum≤ 59.7 lb/dSep
Nitrogen, ammonia total [as N]daily maximum≤ 10.2 lb/dAug
Nitrogen, ammonia total [as N]daily maximum≤ 44.8 lb/dDec
Nitrogen, ammonia total [as N]daily maximum≤ 51.9 lb/dFeb
Nitrogen, ammonia total [as N]daily maximum≤ 37.2 lb/dApr
E. coligeometric mean≤ 820 #/100mLJan, Feb, Dec
E. coligeometric mean≤ 158 #/100mLMar–Nov
BOD, carbonaceous [5 day, 20 C]30-day average≤ 25 mg/Lall year
BOD, carbonaceous [5 day, 20 C]7-day average≤ 30 mg/Lall year
BOD, carbonaceous [5 day, 20 C]30-day average≤ 121 lb/dall year
BOD, carbonaceous [5 day, 20 C]7-day average≤ 193 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/IA0042757 · MCP: https://passage-data.com/mcp