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Matagorda Waste Disposal and Water Supply Corporation

Sewerage Systems, Matagorda, Texas. NPDES permit TX0054038, in force until Jul 2, 2031. Last 12 months: over a limit 5 times (last June 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: form A monthly (15 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 2 of 12 reports late

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

Period endingParameterReportedLimitOver by
December 2025Solids, total suspended, daily average23.5 mg/L≤ 20 mg/L18%
December 2025Solids, total suspended, single grab sample76 mg/L≤ 65 mg/L17%
February 2026E. coli, daily average770 CFU/100mL≤ 126 CFU/100mL511%
February 2026E. coli, single grab sample770 CFU/100mL≤ 399 CFU/100mL93%
June 2026E. coli, daily average140 CFU/100mL≤ 126 CFU/100mL11%

Limits in force (15)

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. Csingle grab sample≤ 65 mg/Lall year
BOD, 5-day, 20 deg. Cdaily average≤ 28 lb/dall year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendeddaily average≤ 20 mg/Lall year
Solids, total suspendedsingle grab sample≤ 65 mg/Lall year
Solids, total suspendeddaily average≤ 28 lb/dall year
Flow, in conduit or thru treatment plantdaily average≤ .17 MGDall year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Chlorine, total residualmonthly minimum≥ 1 mg/Lall year
Chlorine, total residualmonthly maximum≤ 4 mg/Lall year
E. colidaily average≤ 126 CFU/100mLall year
E. colisingle grab sample≤ 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/TX0054038 · MCP: https://passage-data.com/mcp