Romtec Utilities designed and supplied a triplex stormwater pump station for a new Home Depot store in Leander, Texas. The pump system was designed to meet city stormwater detention requirements, which required new developments to carefully manage runoff. After construction, stormwater must be collected and released at the same rate as it was before the site was developed.

As commercial development continues throughout Central Texas, municipalities are implementing stricter stormwater management standards to reduce flooding risks and protect public infrastructure. To comply with these regulations, stormwater from the site is routed to an on-site detention pond and pumped to a designated outfall structure before entering the public storm system.

Romtec Utilities worked closely with the project engineer and general contractor to design and supply a triplex stormwater pumping system that is reliable, efficient, and fully compliant with the city requirements. The system includes separate discharge pipes for each pump, providing redundancy and helping ensure the system continues to operate even if one pump is offline.

Because the pump station design was reviewed independently from the city’s civil plan approval process, the project team was able to streamline coordination efforts and maintain project schedules.

Leander is a fast-growing city located just north of Austin in Central Texas. The city has experienced significant residential and commercial growth, expanded transportation infrastructure, and increasing demand for retail development.

With rapid development comes increased impervious surface area from buildings, roads, and parking lots. These surfaces prevent rainfall from naturally infiltrating the ground, increasing stormwater runoff volumes and peak flow rates.

Leander received approximately 26 to 35 inches of rainfall annually, with the heaviest precipitation typically occurring during spring and fall storm events. Intense rainfall events are common throughout Central Texas and can create localized flooding If runoff is not properly managed. As a result, new developments are often required to include stormwater detention systems and controlled discharge infrastructure to minimize impacts on downstream properties and public stormwater systems.

For large commercial developments such as Home Depot, effective stormwater management infrastructure is critical for regulatory compliance, flood prevention, and long-term site protection.

Home Depot is one of the largest home improvement retailers in the United States, serving contractors, builders, and do-it-yourselfers. As part of its expansion into growing markets, the company developed a new store in Leander to meet local demand.
Large retail sites like Home Depot generate significant stormwater runoff due to wide roof areas and large parking lots. Because of this, cities require strict stormwater detention and release systems.

The triplex stormwater pump station installed at this site provides a dependable and code-compliant solution that meets city detention and discharge requirements while supporting the long-term operational needs of a high-traffic commercial site. The triplex configuration and independent force mains provide redundancy and resilience, reducing risk and enhancing system uptime.

The three-pump setup and separate discharge lines allow the system to keep running even during maintenance or unexpected issues. This improves uptime and helps protect the site from flooding.

Romtec Utilities prefabricated and preassembled as much of the pump station as possible before delivering it to the project site. This approach reduces on-site labor and improves overall efficiency.

The complete system includes a round concrete wet well, internal piping, pumps, and a control panel. These components were delivered to the site and installed by the contractor, with Romtec Utilities providing technical guidance throughout the process.

Key system features of this stormwater pump system include:

• Triplex stormwater pumping system for redundancy and operational flexibility
• Independent force mains, each approximately 139 feet in length
• 8-foot diameter round wet well, providing approximately 536 gallons of active volume
• Precast concrete construction, designed for long-term durability in a buried installation

Alternating pump operation to balance wear and extend equipment lifeThe control system uses float switches to detect water levels and trigger pump operation. It also includes alarm features that can send alerts through a cellular communication device. The panel is built for outdoor use and designed for easy startup and simple maintenance.

The main challenge for the Home Depot project was designing a stormwater system that could control discharge rates while accommodating varying inflow conditions. Commercial sites like this experience changing flow conditions depending on rainfall intensity.

The city required stormwater detention and controlled release, but there were no unusual equipment constraints, allowing Romtec Utilities to focus on optimizing efficiency, reliability, and constructability.
Romtec Utilities worked directly with the general contractor to clearly define responsibilities, eliminate scope overlap, and deliver a cost-effective solution without sacrificing system performance.

Romtec Utilities designed, manufactured, and supplied a triplex stormwater pump station that meets all project requirements.

Pump station design specification:

• Peak inflow rate: 1,770 GPM
• Individual pumps capacity: 429 GPM
• Total dynamic head: 19 feet
• Triplex pump configuration
• Independent force mains for each pump
• Automated level controls with alarm capabilities

This design provides the ideal balance between hydraulic performance and operational reliability. During normal operation, pumps alternate automatically to distribute runtime evenly. During higher flow conditions, additional pumps engage as necessary to manage stormwater volumes while maintaining compliance with discharge requirements.

The triplex configuration ensures that the system can handle high demand while maintaining backup capacity. The result is a dependable stormwater solution that protects the site and meets city standards.

This project was made possible through strong collaboration between all partners involved.

• Owner: Home Depot
• General Contractor: MYCON General Contractor
• Civil and Electrical Engineer: Lars Andersen
• Pump Station Designer and Supplier: Romtec Utilities
• Manufacturer’s Representative: Hydro Source

Hydro Source played a critical role in advancing the project and connect Romtec utilities with the project team. Through strong coordination among all partners, the project was completed with an efficient, reliable, and fully compliant stormwater pump station.

With decades of experience in designing and manufacturing site-specific stormwater pump stations, Romtec Utilities continues to support large commercial development across the United States. The Home Depot project in Leander shows how a well-designed triplex stormwater pump station can meet strict stormwater requirements while supporting long-term reliability.

By combining prefabrication, strong coordination, and tailored engineering, Romtec Utilities provided a system that balances performance, cost, and ease of construction. The result is a dependable solution that helps protect the site, meet local regulations, and support ongoing development in growing communities.