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Nashtec LLC

Industrial Inorganic Chemicals, San Patricio, Texas. NPDES permit TX0137481 expired Jul 30, 2025; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: outfall 001 form A monthly (4 values), outfall 101 form A monthly (6 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 (10)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. fahrenheitdaily averagereport only (deg F)all year001
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year001
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Oxygen demand, chem. [high level] [COD]daily maximum≤ 200 mg/Lall year101
pHminimum≥ 6.5 SUall year101
pHmaximum≤ 9 SUall year101
Oil & Greasedaily maximum≤ 15 mg/Lall year101
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year101
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year101

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/TX0137481 · MCP: https://passage-data.com/mcp