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El Paso County Tornillo Water Improvement District

Sewage treatment plant, Tornillo, Texas. NPDES permit TX0126772, in force until Aug 13, 2031. Last 12 months: over a limit 3 times (last November 2025), 1 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
5 values over a limit, 0 required values missing, 0 of 12 reports late

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

Period endingParameterReportedLimitOver by
November 2025BOD, 5-day, 20 deg. C, daily average109.68 mg/L≤ 20 mg/L448%
November 2025BOD, 5-day, 20 deg. C, daily average200.98 lb/d≤ 122 lb/d65%
November 2025BOD, 5-day, 20 deg. C, daily maximum429 mg/L≤ 45 mg/L853%

Limits in force (13)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]monthly minimum≥ 2 mg/Lall year
BOD, 5-day, 20 deg. Cdaily average≤ 20 mg/Lall year
BOD, 5-day, 20 deg. Cdaily maximum≤ 45 mg/Lall year
BOD, 5-day, 20 deg. Cdaily average≤ 122 lb/dall year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendeddaily average≤ 20 mg/Lall year
Solids, total suspendeddaily maximum≤ 45 mg/Lall year
Solids, total suspendeddaily average≤ 122 lb/dall year
Flow, in conduit or thru treatment plantdaily average≤ .73 MGDall year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
E. colidaily average≤ 126 CFU/100mLall year
E. colidaily maximum≤ 399 CFU/100mLall year

How strict are these limits?

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

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/TX0126772 · MCP: https://passage-data.com/mcp