Zachry Construction has begun a multi-year, roughly $108 million overhaul of chemical containment facilities at the Central Regional Wastewater System treatment plant in Dallas, with the work expected to be completed in the final quarter of 2029.
The San Antonio-based infrastructure builder is acting as prime contractor for the Trinity River Authority of Texas, which owns the plant. The authority's board approved the contract at approximately $108 million.
The scope centres on a new chlorine and sulfur dioxide containment building, with a supplemental chlorine storage building, pump stations and other site improvements alongside. Zachry will demolish existing equipment and structures, modify parts of the current facility and put up new structures and equipment.
Beyond the containment work, the contractor will handle sitework, grading, paving, stormwater drainage and roadways, as well as chemical-solution, plant-water, drainage, stormwater and natural-gas piping. Electrical and instrumentation systems are also part of the contract.
"As communities continue to grow, investments in water and wastewater infrastructure remain essential to protecting public health and supporting long-term system reliability," said Tyler Farella, vice-president at Zachry Construction. "This project will help strengthen critical treatment infrastructure for Trinity River Authority, and it reflects the kind of complex civil and water work our teams are equipped to deliver with a strong focus on safety, coordination and enduring quality."
The award comes as major US contractors increasingly turn to the water sector, particularly in Texas.
