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Port O'connor Improvement District

Water Supply, Port O'connor, Texas. NPDES permit TX0135232 expired Aug 20, 2025; its limits still apply. Last 12 months: over a limit 7 times (last August 2026), 1 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: form A monthly (5 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 2 of 8 reports late

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

Period endingParameterReportedLimitOver by
October 2025Flow, in conduit or thru treatment plant, daily average.249 MGD≤ .216 MGD15%
November 2025Flow, in conduit or thru treatment plant, daily average.223 MGD≤ .216 MGD3%
March 2026Flow, in conduit or thru treatment plant, daily average.218 MGD≤ .216 MGD1%
April 2026pH, minimum0 SU≥ 6 SU—
June 2026Flow, in conduit or thru treatment plant, daily maximum.439 MGD≤ .432 MGD2%
July 2026Flow, in conduit or thru treatment plant, daily average.233 MGD≤ .216 MGD8%
August 2026Flow, in conduit or thru treatment plant, daily average.241 MGD≤ .216 MGD12%

Limits in force (5)

ParameterStatisticLimitMonths
Oxygen demand, chem. [high level] [COD]daily maximumreport only (mg/L)all year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Flow, in conduit or thru treatment plantdaily average≤ .216 MGDall year
Flow, in conduit or thru treatment plantdaily maximum≤ .432 MGDall year

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/TX0135232 · MCP: https://passage-data.com/mcp