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Saint Gobain Ceramic

Abrasive Products, Huntsville, Alabama. NPDES permit AL0000299, in force until Oct 31, 2027. Last 12 months: over a limit once (last May 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due: About 28 days after each period: form 1 monthly (6 values), form Q quarterly (2 values)
Renewal application due: May 4, 2027 · 180 days before expiry; your permit may set another date
Last report on file: August 2026
Oct 2024 – Sep 2025: 0 values over a limit, 0 required values missing, 1 of 16 reports late

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

Period ending	Parameter	Reported	Limit	Over by
May 2026	Solids, total suspended, daily maximum	107	≤ 100 mg/L	7%

Limits in force (8)

Parameter	Statistic	Limit	Months
Temperature, water deg. fahrenheit	daily maximum	≤ 86 deg F	all year
pH	daily minimum	≥ 6 SU	all year
pH	daily maximum	≤ 8.5 SU	all year
Solids, total suspended	daily maximum	≤ 100 mg/L	all year
Oil & Grease	daily maximum	≤ 15 mg/L	all year
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year
Chlorine, total residual	monthly average	≤ .68 mg/L	all year
Chlorine, total residual	daily maximum	≤ 1 mg/L	all year

How strict are these limits?

Temperature, water deg. fahrenheit, daily maximum 86 deg F — stricter than 69% of 43 other minor industrial and other permits in Alabama; 28% have the same limit
pH, daily maximum 8.5 SU — stricter than 36% of 592 other minor industrial and other permits in Alabama; 63% have the same limit

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

Same industry: the 12 Stone, Clay, Glass and Concrete Products permits in Alabama.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/AL0000299 · MCP: https://passage-data.com/mcp