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

Quad State Gauging & Measurement

Testing Laboratories, Cedar Falls, Iowa. NPDES permit IA0074071, in force until Dec 31, 2029. Last 12 months: no values over a limit, 44 required values missing, 3 of 11 reports late. 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: 0 values over a limit, 40 required values missing, 4 of 10 reports late

Limits in force (6)

Parameter	Statistic	Limit	Months
pH	daily minimum	≥ 6.5 SU	all year
pH	daily maximum	≤ 9 SU	all year
Chlorine, total residual	30-day average	≤ .034 mg/L	all year
Chlorine, total residual	daily maximum	≤ .058 mg/L	all year
Chlorine, total residual	30-day average	≤ .00024 lb/d	all year
Chlorine, total residual	daily maximum	≤ .00041 lb/d	all year

How strict are these limits?

pH, daily minimum at least 6.5 SU — stricter than 60% of 423 other minor industrial and other permits in Iowa; 39% have the same limit
Chlorine, total residual, 30-day average .034 mg/L — stricter than 46% of 106 other minor industrial and other permits in Iowa
Chlorine, total residual, daily maximum .058 mg/L — stricter than 28% of 107 other minor industrial and other permits in Iowa; 1% have the same limit

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

Same industry: the 6 Engineering, Accounting, Research and Management Services 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/IA0074071 · MCP: https://passage-data.com/mcp