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Owens Corning Insulating Systems LLC

Mineral Wool, Waxahachie, Texas. NPDES permit TX0065749, in force until Oct 20, 2027. Last 12 months: no values over a limit, 2 of 13 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due: About 20 days after each period: form A monthly (9 values), form Y yearly
Renewal application due: Apr 23, 2027 · 180 days before expiry; your permit may set another date
Last report on file: September 2026
Oct 2024 – Sep 2025: 3 values over a limit, 0 required values missing, 0 of 13 reports late

Limits in force (11)

Parameter	Statistic	Limit	Months
BOD, 5-day, 20 deg. C	daily maximum	≤ 30 mg/L	all year
Oxygen demand, chem. [high level] [COD]	daily maximum	≤ 250 mg/L	all year
pH	minimum	≥ 6 SU	all year
pH	maximum	≤ 9 SU	all year
Oil & Grease	daily maximum	≤ 15 mg/L	all year
Nitrogen, ammonia total [as N]	daily maximum	≤ 5 mg/L	all year
Chromium, total [as Cr]	daily maximum	≤ 2 mg/L	all year
Phenolics, total recoverable	daily maximum	≤ 1 mg/L	all year
Flow, in conduit or thru treatment plant	daily average	report only (MGD)	all year
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year
Solids, total dissolved	daily maximum	≤ 1500 mg/L	all year

How strict are these limits?

Nitrogen, ammonia total [as N], daily maximum 5 mg/L — stricter than 88% of 59 other minor industrial and other permits in Texas; 3% have the same limit
Solids, total dissolved, daily maximum 1500 mg/L — stricter than 82% of 35 other minor industrial and other permits in Texas
BOD, 5-day, 20 deg. C, daily maximum 30 mg/L — stricter than 65% of 79 other minor industrial and other permits in Texas; 19% have the same limit

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

Same industry: the 10 Stone, Clay, Glass and Concrete Products permits in Texas.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/TX0065749 · MCP: https://passage-data.com/mcp