Freeport sits along the Texas Gulf Coast at the mouth of the Brazos River, where port activity, industry, tourism, and coastal living intersect. This economic diversity places sustained performance and reliability demands on the city’s wastewater infrastructure.

Freeport’s existing wastewater treatment facility was approaching the end of its useful service life and experiencing structural problems. To replace the aging infrastructure while maintaining uninterrupted service, the city moved forward with a new wastewater treatment plant. Seven Seas Water Group, through its Houston-based subsidiary, AUC Group, constructed a 1.6 million gallon per day (MGD) steel concentric wastewater treatment plant featuring an 80-foot clarifier and a 130-foot outer wall incorporating aeration and chlorine contact treatment chambers.

Constructing the new plant alongside the existing facility allowed the city to maintain wastewater treatment service throughout construction.

Maintaining Wastewater Service During Plant Replacement

The project required coordinated site planning, structural precision, and sequencing discipline to ensure continuity of service. The concentric configuration brings clarification, aeration, and chlorine contact treatment together within a circular plant layout.

Construction activities included the erection and assembly of the concentric steel units, integration of process equipment, and alignment of a large-diameter clarifier and its supporting mechanisms.

Building next to an operating plant required careful staging, access control, and safety management. The existing facility remained operational throughout construction, allowing Freeport to maintain wastewater treatment service while the new plant was built.