Central Mesa Reuse Pipeline

Garney is the construction manager at risk (CMAR) for the City of Mesa’s Central Mesa Reuse Pipeline, a 10.5-mile reclaimed water pipeline that connects the City’s Northwest and Southeast Water Reclamation Plants. In partnership with Dibble Engineering, Kimley-Horn, and Ardurra, this $150 million infrastructure project diversifies Mesa’s drinking water sources by delivering treated water to the Gila River Indian Community (GRIC) in exchange for Colorado River water credits.  

In addition to the pipeline, Garney completed key plant upgrades and built a new intermediate pump station to support operations. The work included installing five 450 HP vertical turbine pumps, a 500,000-gallon reclaimed water storage tank, two surge tanks, and about 1,200 linear feet of yard piping ranging from 24 to 72 inches in diameter. Upgrades at three existing water reclamation facilities included pump replacements, surge tank installation, and system control enhancements to manage reclaimed water flow.

As part of the City’s 100-year water supply plan, this project represents a significant step forward in advancing water reuse and regional water management in Arizona. The agreement with GRIC helps preserve Mesa’s drinking water supply by reducing reliance on groundwater resources and expanding reclaimed water reuse.  

Solutions 

Trenchless Installation: Crews completed 27 hand tunnels, including a 700 LF crossing beneath US 60, avoiding major road closures and protecting critical infrastructure. 

Utility Coordination: Garney’s early involvement in design allowed the planning of 1,000+ utility crossings. Careful scheduling and coordination prevented delays.   

Traffic Control Strategy: Over 550 traffic control plans were implemented and adapted to keep traffic moving across multiple city limits while keeping the public informed.  

Project Status

Pipe installation and plant construction are complete. The pipeline is operational and supports Mesa’s long-term reuse water delivery plans. The completed plant facilities provide the infrastructure needed for reliable system performance.