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Quikrete Companies

Cement, Hydraulic, Buffalo, Iowa. NPDES permit IA0063525, in force until Jul 31, 2030. Last 12 months: over a limit once (last November 2025). Source: EPA ECHO, Oct 22, 2026.

Reports due: About 15 days after each period: outfall 001 form A monthly (4 values), outfall 003 form A monthly (3 values), outfall 004 form A monthly (3 values)
Last report on file: September 2026
Oct 2024 – Sep 2025: 0 values over a limit, 0 required values missing, 0 of 36 reports late

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

Period ending	Parameter	Reported	Limit	Over by
November 2025	Solids, total suspended, 30-day average	34	≤ 30 mg/L	13%

Limits in force (10)

Parameter	Statistic	Limit	Months	Outfall
pH	daily minimum	≥ 6 SU	all year	001
pH	daily maximum	≤ 9 SU	all year	001
Solids, total suspended	30-day average	≤ 30 mg/L	all year	001
Solids, total suspended	daily maximum	≤ 45 mg/L	all year	001
pH	daily minimum	≥ 6 SU	all year	003
pH	daily maximum	≤ 9 SU	all year	003
Solids, total suspended	daily maximum	≤ 50 mg/L	all year	003
pH	daily minimum	≥ 6 SU	all year	004
pH	daily maximum	≤ 9 SU	all year	004
Solids, total suspended	daily maximum	≤ 50 mg/L	all year	004

How strict are these limits?

Solids, total suspended, 30-day average 30 mg/L — stricter than 40% of 289 other minor industrial and other permits in Iowa; 56% have the same limit
Solids, total suspended, daily maximum 45 mg/L — stricter than 14% of 114 other minor industrial and other permits in Iowa; 77% have the same limit

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

Same industry: the 5 Stone, Clay, Glass and Concrete Products permits in Iowa.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/IA0063525 · MCP: https://passage-data.com/mcp