Notice of Unauthorized Discharge

FOR IMMEDIATE RELEASE
May 29, 2026
Media Contact:­ Keith Hardcastle, Public Information Officer
(281) 226-1142 |[email protected]

MIDLOTHIAN, TEXAS - A wastewater collection system upstream of a GCA Treatment Facility experienced structural failure and resulted in greater than 100,000 gallons of domestic wastewater entering the Facility and ultimately discharging via a permitted outfall for the Facility located at:

• 3251 RailPort Parkway, Midlothian, Texas
  

IF YOU RECEIVE YOUR DRINKING WATER FROM A PUBLIC WATER SYSTEM, YOUR WATER IS SAFE FROM THIS DISCHARGE, AND YOU DO NOT NEED TO BOIL YOUR WATER.

Gulf Coast Authority is closely monitoring the situation. As of May 29, 2026, at 1:00 PM, the estimated volume of released wastewater from this location was greater than 100,000 gallons. All wastewater outflows in excess of 100,000 gallons must be reported to the Texas Commission on Environmental Quality (TCEQ). The final estimated quantity of the outflow will be reported to TCEQ.

Appropriate local officials and the TCEQ have been notified, and Gulf Coast Authority crews are monitoring and coordinating with appropriate parties to address the structural failure.

TCEQ Requires This Mandatory Notification and the Information Below

Persons using private drinking water supply wells located within ½-mile of the spill sites or within the potentially affected area should use only water that has been distilled or boiled at a rolling boil for at least one minute for all personal uses including drinking, cooking, bathing, and tooth brushing.

Individuals with private water wells should have their well water tested and disinfected, if necessary, prior to discontinuing distillation or boiling. Persons who purchase water from a public water supply may contact their water supply distributor to determine if the water is safe for personal use.

The public should avoid contact with waste material, soil, or water in the area potentially affected by the spills. Temporarily avoid swimming in affected areas.

If the public comes into contact with waste material, soil, or water potentially affected by the spills, they should bathe and wash clothes thoroughly as soon as possible.

Texas Commission on Environmental Quality
Chapter 319 - General Regulations Incorporated Into Permits
Rule Log No. 99031-319-WT

Figure: 30 TAC §319.303

NOTICE OF UNAUTHORIZED DISCHARGE FROM A WASTEWATER FACILITY

An unauthorized discharge from a wastewater treatment facility has occurred.

INFORMATION ABOUT THE DISCHARGE

Facility Name: GCA RailPort Facility in North Texas.

Contact for further information: Keith Hardcastle (281) 226-1142.

Location of the discharge: Soil Conservation Service Site 9 Reservoir (on Cottonwood Creek), Midlothian, TX 76065.

Estimated time and date of spill: May 28, 2026, at 1:00 p.m.

Estimated volume of the spill (number of gallons): >100,000 gallons.

Type of spill: Domestic wastewater.

Explain other: N/A .

Area potentially affected: Soil Conservation Service Site 9 Reservoir.

Suspected cause of spill: A wastewater collection system upstream of a GCA Treatment Facility experienced structural failure.

THE FOLLOWING ACTIONS HAVE BEEN TAKEN:

• Appropriate local governmental officials have been notified.
• TCEQ regional office has been notified.
• All discharges have been suspended until further notice.
• The cause of the discharge has been corrected.
• Increased monitoring of water supply systems has been initiated.
• Facility clean-up activities are in progress.

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