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Tenaris Bay City Inc

Fabricated Pipe And Fittings, Baytown, Texas. NPDES permit TX0129747, in force until Jun 26, 2030. Last 12 months: no values over a limit, 2 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: form A monthly (13 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 3 of 12 reports late

Limits in force (13)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheitdaily maximum≤ 95 deg Fall year
Oxygen demand, chem. [high level] [COD]daily average≤ 20 lb/dall year
Oxygen demand, chem. [high level] [COD]daily maximum≤ 25 lb/dall year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Oil & Greasedaily average≤ 1.5 lb/dall year
Oil & Greasedaily maximum≤ 2 lb/dall year
Copper, total [as Cu]daily average≤ .044 mg/Lall year
Copper, total [as Cu]daily maximum≤ .093 mg/Lall year
Copper, total [as Cu]daily average≤ .009 lb/dall year
Copper, total [as Cu]daily maximum≤ .02 lb/dall year
Flow, in conduit or thru treatment plantdaily average≤ .025056 MGDall year
Flow, in conduit or thru treatment plantdaily maximum≤ .03132 MGDall year

How strict are these limits?

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

Same industry: the 17 Fabricated Metal 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/TX0129747 · MCP: https://passage-data.com/mcp