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Tib Zinc Chemicals LLC

Industrial Inorganic Chemicals, Freeport, Texas. NPDES permit TX0046906, in force until Jan 12, 2031. Last 12 months: no values over a limit, 2 of 22 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: outfall 001 form A monthly (19 values), outfall 002 form A monthly (7 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 24 reports late

Limits in force (26)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. fahrenheitdaily maximum≤ 110 deg Fall year001
BOD, 5-day, 20 deg. Cdaily average≤ 14.6 lb/dall year001
BOD, 5-day, 20 deg. Cdaily maximum≤ 29.2 lb/dall year001
pHminimum≥ 6 SUall year001
pHmaximum≤ 10 SUall year001
Solids, total suspendeddaily average≤ 29.2 lb/dall year001
Solids, total suspendeddaily maximum≤ 51.1 lb/dall year001
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year001
Arsenic, total [as As]daily average≤ .15 lb/dall year001
Arsenic, total [as As]daily maximum≤ .29 lb/dall year001
Cadmium, total [as Cd]daily average≤ .15 lb/dall year001
Cadmium, total [as Cd]daily maximum≤ .29 lb/dall year001
Lead, total [as Pb]daily average≤ .07 lb/dall year001
Lead, total [as Pb]daily maximum≤ .26 lb/dall year001
Zinc, total [as Zn]daily average≤ 1.1 lb/dall year001
Zinc, total [as Zn]daily maximum≤ 2.9 lb/dall year001
Flow, in conduit or thru treatment plantdaily average≤ .27 MGDall year001
Flow, in conduit or thru treatment plantdaily maximum≤ .383 MGDall year001
Enterococcidaily averagereport only (CFU/100mL)all year001
pHminimum≥ 6 SUall year002
pHmaximum≤ 9 SUall year002
Oil & Greasedaily maximum≤ 15 mg/Lall year002
Carbon, tot organic [TOC]daily maximum≤ 55 mg/Lall year002
Zinc, total [as Zn]daily maximum≤ 3.5 mg/Lall year002
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year002
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year002

New limits from Feb 1, 2029

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Enterococci, daily average35 CFU/100mLnew4 CFU/100mL (6 values)0.114×

How strict are these limits?

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

Same industry: the 165 Chemicals and Allied Products permits in Texas.

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/TX0046906 · MCP: https://passage-data.com/mcp