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

Ottumwa Water Works

Water Supply, Ottumwa, Iowa. NPDES permit IA0000035, in force until Dec 31, 2026. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (14 values)
Renewal application due
Jul 4, 2026 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 12 reports late

Limits in force (14)

ParameterStatisticLimitMonths
pHdaily minimum≥ 6.3 SUall year
pHdaily maximum≤ 11 SUall year
Solids, total suspended30-day average≤ 30 mg/Lall year
Solids, total suspendeddaily maximum≤ 45 mg/Lall year
Solids, total suspended30-day average≤ 193 lb/dall year
Solids, total suspendeddaily maximum≤ 289 lb/dall year
Iron, total [as Fe]30-day average≤ 2.834 mg/Lall year
Iron, total [as Fe]daily maximum≤ 2.834 mg/Lall year
Iron, total [as Fe]30-day average≤ 20.649 lb/dall year
Iron, total [as Fe]daily maximum≤ 20.649 lb/dall year
Chlorine, total residual30-day average≤ .056 mg/Lall year
Chlorine, total residualdaily maximum≤ .056 mg/Lall year
Chlorine, total residual30-day average≤ .555 lb/dall year
Chlorine, total residualdaily maximum≤ .555 lb/dall year

How strict are these limits?

Cited limits by parameter: Iowa's rules and the federal ones.

Same industry: the 48 Water Supply permits in Iowa.

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/IA0000035 · MCP: https://passage-data.com/mcp