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US Department of the Army

Federal facility (Ammunition, Except For Small Arms), Texarkana, Texas. NPDES permit TX0133370 expired Apr 30, 2026; its limits still apply. Last 12 months: over a limit 2 times (last June 2026), 3 of 16 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: form A monthly (8 values), form Q quarterly
Last report on file
September 2026
Oct 2024 – Sep 2025
3 values over a limit, 0 required values missing, 4 of 16 reports late

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

Period endingParameterReportedLimit
December 2025pH, minimum2.1 SU≥ 6 SU
June 2026pH, minimum5.3 SU≥ 6 SU

Limits in force (10)

ParameterStatisticLimitMonths
Oxygen demand, chem. [high level] [COD]daily maximum≤ 150 mg/Lall year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Copper, total [as Cu]daily averagereport only (mg/L)all year
Copper, total [as Cu]daily maximum≤ 1 mg/Lall year
Zinc, total [as Zn]daily averagereport only (mg/L)all year
Zinc, total [as Zn]daily maximum≤ 2 mg/Lall year
Aluminum, total [as Al]daily maximum≤ 7.2 mg/Lall year
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year

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/TX0133370 · MCP: https://passage-data.com/mcp