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Linden, City of

Sewage treatment plant, Linden, Texas. NPDES permit TX0105091, in force until Jun 17, 2029. Last 12 months: over a limit 5 times (last August 2026), 3 of 12 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: form A monthly (15 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
8 values over a limit, 0 required values missing, 6 of 12 reports late

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

Period endingParameterReportedLimitOver by
May 2026Oxygen, dissolved [DO], monthly minimum5.2 mg/L≥ 6 mg/L13%
June 2026Oxygen, dissolved [DO], monthly minimum4.7 mg/L≥ 6 mg/L22%
July 2026Oxygen, dissolved [DO], monthly minimum4.8 mg/L≥ 6 mg/L20%
July 2026pH, maximum9.3 SU≤ 9 SU—
August 2026pH, maximum9.2 SU≤ 9 SU—

Limits in force (15)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]monthly minimum≥ 6 mg/Lall year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendeddaily average≤ 90 mg/Lall year
Solids, total suspendeddaily average≤ 339 lb/dall year
Nitrogen, ammonia total [as N]daily average≤ 3 mg/Lall year
Nitrogen, ammonia total [as N]single grab sample≤ 15 mg/Lall year
Nitrogen, ammonia total [as N]daily average≤ 11 lb/dall year
Flow, in conduit or thru treatment plantdaily average≤ .45 MGDall year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
E. colidaily average≤ 126 CFU/100mLall year
E. colisingle grab sample≤ 399 CFU/100mLall year
BOD, carbonaceous [5 day, 20 C]daily average≤ 30 mg/Lall year
BOD, carbonaceous [5 day, 20 C]single grab sample≤ 100 mg/Lall year
BOD, carbonaceous [5 day, 20 C]daily average≤ 112 lb/dall 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/TX0105091 · MCP: https://passage-data.com/mcp