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Calhoun Port Authority

Marine Cargo Handling, Point Comfort, Texas. NPDES permit TX0105937 expired Aug 19, 2026; its limits still apply. Last 12 months: over a limit 13 times (last September 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: outfall 001 form A monthly (17 values), outfall 002 form A monthly (6 values), outfall 002 form Q quarterly
Last report on file
September 2026
Oct 2024 – Sep 2025
14 values over a limit, 0 required values missing, 0 of 28 reports late

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

All 13 values over a limit
Period endingParameterReportedLimitOver by
October 2025Enterococci, daily geometric mean1 CFU/100mL≥ 35 CFU/100mL97%
November 2025Enterococci, daily geometric mean1 CFU/100mL≥ 35 CFU/100mL97%
December 2025Enterococci, daily geometric mean1 CFU/100mL≥ 35 CFU/100mL97%
January 2026Enterococci, daily geometric mean1 CFU/100mL≥ 35 CFU/100mL97%
February 2026Enterococci, daily geometric mean1 CFU/100mL≥ 35 CFU/100mL97%
March 2026Enterococci, daily maximum178.9 CFU/100mL≤ 104 CFU/100mL72%
March 2026Enterococci, daily geometric mean1 CFU/100mL≥ 35 CFU/100mL97%
April 2026Enterococci, daily geometric mean1 CFU/100mL≥ 35 CFU/100mL97%
May 2026Enterococci, daily geometric mean1 CFU/100mL≥ 35 CFU/100mL97%
June 2026Enterococci, daily geometric mean1 CFU/100mL≥ 35 CFU/100mL97%
July 2026Enterococci, daily geometric mean1 CFU/100mL≥ 35 CFU/100mL97%
August 2026Enterococci, daily geometric mean1 CFU/100mL≥ 35 CFU/100mL97%
September 2026Enterococci, daily geometric mean1 CFU/100mL≥ 35 CFU/100mL97%

Limits in force (24)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]monthly minimum≥ 2 mg/Lall year001
BOD, 5-day, 20 deg. Cdaily average≤ 20 mg/Lall year001
BOD, 5-day, 20 deg. Cdaily maximum≤ 45 mg/Lall year001
BOD, 5-day, 20 deg. Cdaily average≤ .5 lb/dall year001
BOD, 5-day, 20 deg. Cdaily maximum≤ 2.25 lb/dall year001
pHminimum≥ 6 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendeddaily average≤ 20 mg/Lall year001
Solids, total suspendeddaily maximum≤ 45 mg/Lall year001
Solids, total suspendeddaily average≤ .5 lb/dall year001
Solids, total suspendeddaily maximum≤ 2.25 lb/dall year001
Flow, in conduit or thru treatment plantdaily average≤ .003 MGDall year001
Flow, in conduit or thru treatment plantdaily maximum≤ .006 MGDall year001
Chlorine, total residualmonthly minimum≥ 1 mg/Lall year001
Chlorine, total residualmonthly maximum≤ 4 mg/Lall year001
Enterococcidaily geometric mean≥ 35 CFU/100mLall year001
Enterococcidaily maximum≤ 104 CFU/100mLall year001
pHminimum≥ 6 SUall year002
pHmaximum≤ 9 SUall year002
Oil & Greasedaily maximum≤ 15 mg/Lall year002
Carbon, tot organic [TOC]daily maximum≤ 75 mg/Lall year002
1,2-Dichloroethanedaily maximum≤ .2 mg/Lall year002
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year002
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year002

How strict are these limits?

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

Same industry: the 19 Water Transportation 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/TX0105937 · MCP: https://passage-data.com/mcp