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

Eastern Iowa Regional Utility Service Systems

Sewage treatment plant, Dyersville, Iowa. NPDES permit IA0079740 expired Aug 31, 2026; its limits still apply. Last 12 months: over a limit once (last October 2025). Source: EPA ECHO, Oct 22, 2026.

Reports due: About 15 days after each period: form A monthly (6 values)
Last report on file: August 2026
Oct 2024 – Sep 2025: 1 value over a limit, 0 required values missing, 1 of 12 reports late

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

Period ending	Parameter	Reported	Limit
October 2025	pH, daily minimum	3.1	≥ 6.5 SU

Limits in force (6)

Parameter	Statistic	Limit	Months
pH	daily minimum	≥ 6.5 SU	all year
pH	daily maximum	≤ 9 SU	all year
Solids, total suspended	30-day average	≤ 80 mg/L	all year
Solids, total suspended	7-day average	≤ 120 mg/L	all year
BOD, carbonaceous [5 day, 20 C]	30-day average	≤ 25 mg/L	all year
BOD, carbonaceous [5 day, 20 C]	7-day average	≤ 40 mg/L	all year

How strict are these limits?

pH, daily minimum at least 6.5 SU — stricter than 56% of 699 other minor POTWs in Iowa; 44% have the same limit

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/IA0079740 · MCP: https://passage-data.com/mcp