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City of Britt

Sewage treatment plant, Britt, Iowa. NPDES permit IA0023582 expired Aug 31, 2026; its limits still apply. Last 12 months: over a limit 4 times (last March 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (39 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
2 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 average28.75≤ 25 mg/L15%
January 2026Copper, total [as Cu], 30-day average.022≤ .0174 mg/L26%
February 2026Copper, total [as Cu], 30-day average.024≤ .0174 mg/L38%
March 2026Copper, total [as Cu], 30-day average.027≤ .0174 mg/L55%

Limits in force (83)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]daily minimum≥ 5 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≥ 6.5 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≤ 225 lb/dall year
Solids, total suspended7-day average≤ 338 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≤ 9.9 mg/LApr
Nitrogen, ammonia total [as N]30-day average≤ 7.3 mg/LJun
Nitrogen, ammonia total [as N]30-day average≤ 14.7 mg/LDec
Nitrogen, ammonia total [as N]30-day average≤ 12.3 mg/LOct
Nitrogen, ammonia total [as N]30-day average≤ 18.9 mg/LJan
Nitrogen, ammonia total [as N]30-day average≤ 10.5 mg/LJul
Nitrogen, ammonia total [as N]30-day average≤ 9 mg/LMay
Nitrogen, ammonia total [as N]30-day average≤ 7.8 mg/LSep
Nitrogen, ammonia total [as N]30-day average≤ 10.7 mg/LMar
Nitrogen, ammonia total [as N]30-day average≤ 21.1 mg/LFeb
Nitrogen, ammonia total [as N]30-day average≤ 12.8 mg/LNov
Nitrogen, ammonia total [as N]30-day average≤ 10.2 mg/LAug
Nitrogen, ammonia total [as N]daily maximum≤ 27 mg/LApr
Nitrogen, ammonia total [as N]daily maximum≤ 27 mg/LJun
Nitrogen, ammonia total [as N]daily maximum≤ 30 mg/LDec
Nitrogen, ammonia total [as N]daily maximum≤ 32 mg/LOct
Nitrogen, ammonia total [as N]daily maximum≤ 43 mg/LJan
Nitrogen, ammonia total [as N]daily maximum≤ 31 mg/LJul
Nitrogen, ammonia total [as N]daily maximum≤ 27 mg/LMay
Nitrogen, ammonia total [as N]daily maximum≤ 32 mg/LSep
Nitrogen, ammonia total [as N]daily maximum≤ 36 mg/LMar
Nitrogen, ammonia total [as N]daily maximum≤ 51 mg/LFeb
Nitrogen, ammonia total [as N]daily maximum≤ 25 mg/LNov
Nitrogen, ammonia total [as N]daily maximum≤ 26 mg/LAug
Nitrogen, ammonia total [as N]30-day average≤ 57 lb/dApr
Nitrogen, ammonia total [as N]30-day average≤ 41 lb/dJun
Nitrogen, ammonia total [as N]30-day average≤ 87 lb/dDec
Nitrogen, ammonia total [as N]30-day average≤ 71 lb/dOct
Nitrogen, ammonia total [as N]30-day average≤ 112 lb/dJan
Nitrogen, ammonia total [as N]30-day average≤ 54 lb/dJul
Nitrogen, ammonia total [as N]30-day average≤ 51 lb/dMay
Nitrogen, ammonia total [as N]30-day average≤ 44 lb/dSep
Nitrogen, ammonia total [as N]30-day average≤ 63 lb/dMar
Nitrogen, ammonia total [as N]30-day average≤ 125 lb/dFeb
Nitrogen, ammonia total [as N]30-day average≤ 76 lb/dNov
Nitrogen, ammonia total [as N]30-day average≤ 52 lb/dAug
Nitrogen, ammonia total [as N]daily maximum≤ 156 lb/dApr
Nitrogen, ammonia total [as N]daily maximum≤ 156 lb/dJun
Nitrogen, ammonia total [as N]daily maximum≤ 178 lb/dDec
Nitrogen, ammonia total [as N]daily maximum≤ 186 lb/dOct
Nitrogen, ammonia total [as N]daily maximum≤ 255 lb/dJan
Nitrogen, ammonia total [as N]daily maximum≤ 174 lb/dJul
Nitrogen, ammonia total [as N]daily maximum≤ 156 lb/dMay
Nitrogen, ammonia total [as N]daily maximum≤ 186 lb/dSep
Nitrogen, ammonia total [as N]daily maximum≤ 213 lb/dMar
Nitrogen, ammonia total [as N]daily maximum≤ 302 lb/dFeb
Nitrogen, ammonia total [as N]daily maximum≤ 148 lb/dNov
Nitrogen, ammonia total [as N]daily maximum≤ 149 lb/dAug
Nitrogen, nitrate total [as N]30-day average≤ 105 lb/dall year
Nitrogen, nitrate total [as N]daily maximum≤ 172 lb/dall year
Nitrogen, Kjeldahl, total [as N]30-day averagereport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]30-day averagereport only (lb/d)all year
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (lb/d)all year
Chloride [as Cl]30-day average≤ 399 mg/Lall year
Chloride [as Cl]daily maximum≤ 631 mg/Lall year
Chloride [as Cl]30-day average≤ 2965 lb/dall year
Chloride [as Cl]daily maximum≤ 4728 lb/dall year
Copper, total [as Cu]30-day average≤ .0174 mg/Lall year
Copper, total [as Cu]daily maximum≤ .027 mg/Lall year
Copper, total [as Cu]30-day average≤ .1289 lb/dall year
Copper, total [as Cu]daily maximum≤ .2023 lb/dall 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
BOD, carbonaceous [5 day, 20 C]30-day average≤ 188 lb/dall year
BOD, carbonaceous [5 day, 20 C]7-day average≤ 300 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/IA0023582 · MCP: https://passage-data.com/mcp