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Stone, Clay, Glass and Concrete Products — NPDES discharge permits in Iowa

Of the 5 permits in EPA's SIC 32 in IA, 4 went over a limit between 2025-10-01 and 2026-09-30 (Solids, total suspended: 4). 0 are past the expiry date EPA's file holds; 2 have a renewal application overdue or due within 18 months. EPA's file of 2026-10-15.

FacilityLast 12 monthsPermit
HEIDELBERG MATERIALS US CEMENT LLC
IA0072907 · Cement, Hydraulic
Over a limit 5×: Solids, total suspended (5×)Expires May 31, 2031
AMERIZE CEMENT INC.
IA0071951 · Cement, Hydraulic
Over a limit 3×: Solids, total suspended (3×)Renewal application due Dec 2, 2026
HEIDELBERG MATERIALS US CEMENT LLC
IA0001945 · Cement, Hydraulic
Over a limit 2×: Solids, total suspended (2×)Renewal application overdue
QUIKRETE COMPANIES
IA0063525 · Cement, Hydraulic
Over a limit 1×: Solids, total suspended (1×)Expires Jul 31, 2030
EDWARDS CAST STONE COMPANY
IA0076821 · Concrete Products
No value over a limitExpires Jan 31, 2030

The record is EPA's ICIS-NPDES file of 2026-10-15: values filed against each limit between Oct 1, 2025 and Sep 30, 2026. No reports on file may be EPA's gap, not the facility's.

For programs and AI agents: this screen as JSON at /api/v1/permits?state=IA&sic=32, narrowed with &over_limit=true, &parameter=phosphorus or &renewal=due; or add https://passage-data.com/mcp as a remote MCP server (tool list_permits). Free, no key. llms.txt

From EPA's ECHO data, not the permit document itself: your permit is the final word. All states