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

City of Atalissa

Sewage treatment plant, Atalissa, Iowa. NPDES permit IA0070998 expired Apr 18, 2006; its limits still apply. Last 12 months: over a limit once (last December 2025). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (18 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
1 value over a limit, 0 required values missing, 0 of 12 reports late

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

Period endingParameterReportedLimitOver by
December 2025BOD, carbonaceous [5 day, 20 C], 30-day average35≤ 25 mg/L40%

Limits in force (18)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]30-day averagereport only (mg/L)all year
Oxygen, dissolved [DO]daily maximumreport only (mg/L)all year
pHdaily minimum≥ 6 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspended30-day average≤ 30 mg/Lall year
Solids, total suspended7-day average≤ 45 mg/Lall year
Solids, total suspended30-day average≤ 10 lb/dall year
Solids, total suspended7-day average≤ 15 lb/dall year
Solids, Settleable, Net30-day averagereport only (mL/L)all year
Solids, Settleable, Netdaily maximumreport only (mL/L)all year
Flow, in conduit or thru treatment plant30-day average≤ .04 MGDall year
Flow, in conduit or thru treatment plantdaily maximum≤ .06 MGDall 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≤ 8.3 lb/dall year
BOD, carbonaceous [5 day, 20 C]7-day average≤ 13.3 lb/dall year
Mixed liquor30-day averagereport only (mg/L)all year
Mixed liquordaily maximumreport only (mg/L)all 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/IA0070998 · MCP: https://passage-data.com/mcp