Passage Data · Check a report · Use it from your AI

City of Neola

Sewage treatment plant, Neola, Iowa. NPDES permit IA0021041, in force until Oct 31, 2029. Last 12 months: over a limit 5 times (last July 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (25 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
10 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 2026Solids, total suspended, 7-day average71≤ 45 mg/L58%
March 2026pH, daily minimum4.35≥ 6 SU—
April 2026pH, daily minimum5.07≥ 6 SU—
July 2026BOD, carbonaceous [5 day, 20 C], 7-day average42.10866≤ 37 lb/d14%
July 2026BOD, carbonaceous [5 day, 20 C], 7-day average99≤ 40 mg/L148%

Limits in force (69)

ParameterStatisticLimitMonths
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≤ 28 lb/dall year
Solids, total suspended7-day average≤ 42 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≤ 87.4 mg/LMar
Nitrogen, ammonia total [as N]30-day average≤ 102.9 mg/LFeb
Nitrogen, ammonia total [as N]30-day average≤ 24.8 mg/LAug
Nitrogen, ammonia total [as N]30-day average≤ 39.7 mg/LApr
Nitrogen, ammonia total [as N]30-day average≤ 61.1 mg/LNov
Nitrogen, ammonia total [as N]30-day average≤ 45.4 mg/LMay
Nitrogen, ammonia total [as N]30-day average≤ 65 mg/LDec
Nitrogen, ammonia total [as N]30-day average≤ 40.8 mg/LOct
Nitrogen, ammonia total [as N]30-day average≤ 89.9 mg/LJan
Nitrogen, ammonia total [as N]30-day average≤ 26.2 mg/LJul
Nitrogen, ammonia total [as N]30-day average≤ 27.6 mg/LSep
Nitrogen, ammonia total [as N]30-day average≤ 34.3 mg/LJun
Nitrogen, ammonia total [as N]daily maximum≤ 134 mg/LMar
Nitrogen, ammonia total [as N]daily maximum≤ 158.9 mg/LFeb
Nitrogen, ammonia total [as N]daily maximum≤ 117.3 mg/LAug
Nitrogen, ammonia total [as N]daily maximum≤ 99.3 mg/LApr
Nitrogen, ammonia total [as N]daily maximum≤ 98 mg/LNov
Nitrogen, ammonia total [as N]daily maximum≤ 115.6 mg/LMay
Nitrogen, ammonia total [as N]daily maximum≤ 99.7 mg/LDec
Nitrogen, ammonia total [as N]daily maximum≤ 99.5 mg/LOct
Nitrogen, ammonia total [as N]daily maximum≤ 136.4 mg/LJan
Nitrogen, ammonia total [as N]daily maximum≤ 119.4 mg/LJul
Nitrogen, ammonia total [as N]daily maximum≤ 100.7 mg/LSep
Nitrogen, ammonia total [as N]daily maximum≤ 114.7 mg/LJun
Nitrogen, ammonia total [as N]30-day average≤ 55 lb/dMar
Nitrogen, ammonia total [as N]30-day average≤ 64.8 lb/dFeb
Nitrogen, ammonia total [as N]30-day average≤ 15.6 lb/dAug
Nitrogen, ammonia total [as N]30-day average≤ 25 lb/dApr
Nitrogen, ammonia total [as N]30-day average≤ 38.4 lb/dNov
Nitrogen, ammonia total [as N]30-day average≤ 28.6 lb/dMay
Nitrogen, ammonia total [as N]30-day average≤ 40.9 lb/dDec
Nitrogen, ammonia total [as N]30-day average≤ 25.7 lb/dOct
Nitrogen, ammonia total [as N]30-day average≤ 56.6 lb/dJan
Nitrogen, ammonia total [as N]30-day average≤ 16.5 lb/dJul
Nitrogen, ammonia total [as N]30-day average≤ 17.3 lb/dSep
Nitrogen, ammonia total [as N]30-day average≤ 21.6 lb/dJun
Nitrogen, ammonia total [as N]daily maximum≤ 87.7 lb/dMar
Nitrogen, ammonia total [as N]daily maximum≤ 102.7 lb/dFeb
Nitrogen, ammonia total [as N]daily maximum≤ 78.2 lb/dAug
Nitrogen, ammonia total [as N]daily maximum≤ 67 lb/dApr
Nitrogen, ammonia total [as N]daily maximum≤ 65.7 lb/dNov
Nitrogen, ammonia total [as N]daily maximum≤ 76.7 lb/dMay
Nitrogen, ammonia total [as N]daily maximum≤ 67.4 lb/dDec
Nitrogen, ammonia total [as N]daily maximum≤ 67.1 lb/dOct
Nitrogen, ammonia total [as N]daily maximum≤ 89.4 lb/dJan
Nitrogen, ammonia total [as N]daily maximum≤ 80.2 lb/dJul
Nitrogen, ammonia total [as N]daily maximum≤ 68.3 lb/dSep
Nitrogen, ammonia total [as N]daily maximum≤ 75.8 lb/dJun
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≤ 23 lb/dall year
BOD, carbonaceous [5 day, 20 C]7-day average≤ 37 lb/dall 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

· Save this facility as a site · Superfund sites nearby · Your permits on one board

On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/IA0021041 · MCP: https://passage-data.com/mcp