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

City of Dumont

Sewage treatment plant, Dumont, Iowa. NPDES permit IA0033316, in force until Jul 31, 2028. Last 12 months: over a limit 17 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (28 values)
Renewal application due
Feb 2, 2028 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
12 values over a limit, 4 required values missing, 0 of 12 reports late

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

All 17 values over a limit
Period endingParameterReportedLimitOver by
October 2025Nitrogen, ammonia total [as N], daily maximum12.49211≤ 12 lb/d4%
October 2025pH, daily minimum5.16≥ 6 SU—
November 2025pH, daily minimum5.49≥ 6 SU—
December 2025pH, daily minimum5.3≥ 6 SU—
February 2026pH, daily maximum9.6≤ 9 SU—
March 2026BOD, carbonaceous [5 day, 20 C], 30-day average27≤ 25 mg/L8%
March 2026BOD, carbonaceous [5 day, 20 C], 30-day average89.16513≤ 88 lb/d1%
March 2026BOD, carbonaceous [5 day, 20 C], 7-day average167.6828≤ 141 lb/d19%
March 2026pH, daily maximum9.7≤ 9 SU—
April 2026pH, daily maximum9.6≤ 9 SU—
May 2026pH, daily maximum9.63≤ 9 SU—
June 2026pH, daily minimum5.7≥ 6 SU—
June 2026pH, daily maximum9.9≤ 9 SU—
July 2026Solids, total suspended, 30-day average89≤ 80 mg/L11%
July 2026pH, daily minimum5.8≥ 6 SU—
August 2026Solids, total suspended, 30-day average99≤ 80 mg/L24%
August 2026pH, daily minimum5.1≥ 6 SU—

Limits in force (72)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]daily minimum≥ .9 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≤ 80 mg/Lall year
Solids, total suspended7-day average≤ 120 mg/Lall year
Solids, total suspended30-day average≤ 282 lb/dall year
Solids, total suspended7-day average≤ 423 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, total [as N]30-day average≤ 34.8 lb/dall year
Nitrogen, total [as N]daily maximum≤ 56.9 lb/dall year
Nitrogen, ammonia total [as N]30-day average≤ 5 mg/LOct
Nitrogen, ammonia total [as N]30-day average≤ 7.4 mg/LMar
Nitrogen, ammonia total [as N]30-day average≤ 6.1 mg/LMay
Nitrogen, ammonia total [as N]30-day average≤ 6.2 mg/LDec
Nitrogen, ammonia total [as N]30-day average≤ 6.1 mg/LJul
Nitrogen, ammonia total [as N]30-day average≤ 7.1 mg/LApr
Nitrogen, ammonia total [as N]30-day average≤ 5 mg/LSep
Nitrogen, ammonia total [as N]30-day average≤ 21.6 mg/LJan
Nitrogen, ammonia total [as N]30-day average≤ 5 mg/LNov
Nitrogen, ammonia total [as N]30-day average≤ 5.6 mg/LAug
Nitrogen, ammonia total [as N]30-day average≤ 6.1 mg/LJun
Nitrogen, ammonia total [as N]30-day average≤ 12.6 mg/LFeb
Nitrogen, ammonia total [as N]daily maximum≤ 5 mg/LOct
Nitrogen, ammonia total [as N]daily maximum≤ 7.4 mg/LMar
Nitrogen, ammonia total [as N]daily maximum≤ 6.1 mg/LMay
Nitrogen, ammonia total [as N]daily maximum≤ 6.2 mg/LDec
Nitrogen, ammonia total [as N]daily maximum≤ 6.1 mg/LJul
Nitrogen, ammonia total [as N]daily maximum≤ 7.1 mg/LApr
Nitrogen, ammonia total [as N]daily maximum≤ 5 mg/LSep
Nitrogen, ammonia total [as N]daily maximum≤ 21.6 mg/LJan
Nitrogen, ammonia total [as N]daily maximum≤ 5 mg/LNov
Nitrogen, ammonia total [as N]daily maximum≤ 5.6 mg/LAug
Nitrogen, ammonia total [as N]daily maximum≤ 6.1 mg/LJun
Nitrogen, ammonia total [as N]daily maximum≤ 12.6 mg/LFeb
Nitrogen, ammonia total [as N]30-day average≤ 12 lb/dOct
Nitrogen, ammonia total [as N]30-day average≤ 17.5 lb/dMar
Nitrogen, ammonia total [as N]30-day average≤ 14.5 lb/dMay
Nitrogen, ammonia total [as N]30-day average≤ 16.3 lb/dDec
Nitrogen, ammonia total [as N]30-day average≤ 9.6 lb/dJul
Nitrogen, ammonia total [as N]30-day average≤ 14.6 lb/dApr
Nitrogen, ammonia total [as N]30-day average≤ 10.1 lb/dSep
Nitrogen, ammonia total [as N]30-day average≤ 32.8 lb/dJan
Nitrogen, ammonia total [as N]30-day average≤ 12 lb/dNov
Nitrogen, ammonia total [as N]30-day average≤ 9.1 lb/dAug
Nitrogen, ammonia total [as N]30-day average≤ 12.5 lb/dJun
Nitrogen, ammonia total [as N]30-day average≤ 34.2 lb/dFeb
Nitrogen, ammonia total [as N]daily maximum≤ 12 lb/dOct
Nitrogen, ammonia total [as N]daily maximum≤ 17.5 lb/dMar
Nitrogen, ammonia total [as N]daily maximum≤ 14.5 lb/dMay
Nitrogen, ammonia total [as N]daily maximum≤ 16.3 lb/dDec
Nitrogen, ammonia total [as N]daily maximum≤ 14.5 lb/dJul
Nitrogen, ammonia total [as N]daily maximum≤ 19.2 lb/dApr
Nitrogen, ammonia total [as N]daily maximum≤ 12 lb/dSep
Nitrogen, ammonia total [as N]daily maximum≤ 75.5 lb/dJan
Nitrogen, ammonia total [as N]daily maximum≤ 12 lb/dNov
Nitrogen, ammonia total [as N]daily maximum≤ 12.6 lb/dAug
Nitrogen, ammonia total [as N]daily maximum≤ 14.5 lb/dJun
Nitrogen, ammonia total [as N]daily maximum≤ 34.2 lb/dFeb
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≤ 88 lb/dall year
BOD, carbonaceous [5 day, 20 C]7-day average≤ 141 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/IA0033316 · MCP: https://passage-data.com/mcp