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Twu-Wholesale Services Inc

Water Supply, Seminole, Texas. NPDES permit TX0136590, in force until Apr 3, 2031. Last 12 months: over a limit 6 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: form A monthly (9 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
0 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
March 2026Flow, in conduit or thru treatment plant, daily average.392 MGD≤ .375 MGD5%
April 2026Flow, in conduit or thru treatment plant, daily average.393 MGD≤ .375 MGD5%
June 2026Flow, in conduit or thru treatment plant, daily average.396 MGD≤ .375 MGD6%
July 2026Flow, in conduit or thru treatment plant, daily average.41 MGD≤ .375 MGD9%
July 2026Flow, in conduit or thru treatment plant, daily maximum.69 MGD≤ .55 MGD25%
August 2026Flow, in conduit or thru treatment plant, daily average.379 MGD≤ .375 MGD1%

Limits in force (9)

ParameterStatisticLimitMonths
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Chloride [as Cl]daily maximumreport only (mg/L)all year
Sulfate, total [as SO4]daily maximumreport only (mg/L)all year
Selenium, total [as Se]daily averagereport only (mg/L)all year
Selenium, total [as Se]daily maximumreport only (mg/L)all year
Flow, in conduit or thru treatment plantdaily average≤ .375 MGDall year
Flow, in conduit or thru treatment plantdaily maximum≤ .55 MGDall year
Solids, total dissolveddaily maximumreport only (mg/L)all year

New limits from May 1, 2029

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Selenium, total [as Se], daily average0.0168 mg/Lnew0.03059 mg/L (4 values)1.82×
Selenium, total [as Se], daily maximum0.0356 mg/Lnew0.0375 mg/L (4 values)1.05×

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

Same industry: the 115 Water Supply 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/TX0136590 · MCP: https://passage-data.com/mcp