SPECIALISTS IN WATER AND WASTEWATER TREATMENT PLANTS
Recently Completed Projects
Successfully delivered. built to last.
The Spanish Fork & Mapleton Wastewater Reclamation Facility (WRF) replaces aging infrastructure with a new, state-of-the-art treatment plant designed to meet the growing needs of both communities. The project expands treatment capacity and improves effluent quality while creating a sustainable, long-term solution for regional wastewater management.
Construction of the WRF includes a new Headworks Building, which screens large contaminants and grit from incoming flows. From there, wastewater is pumped to a Biological Nutrient Removal (BNR) Basin, where naturally occurring bacteria break down organic material. Treatment then advances to the Membrane Bioreactor (MBR) System, which filters remaining solids through semi-permeable membranes to produce exceptionally clear water.
Supporting structures include an MBR Support Building housing pumps, blowers, and auxiliary systems, and a UV Disinfection Building, where filtered water is exposed to ultraviolet light before being released into natural drainage channels that flow to Utah Lake.
Completed in August 2025 under the Construction Manager/General Contractor (CM/GC) delivery method, the $95.9 million project provides reliable wastewater treatment for more than 45,000 residents. The new facility enhances water quality, supports community growth, and positions Spanish Fork and Mapleton as leaders in sustainable municipal infrastructure.
SPANISH FORK WATER RECLAMATION FACILITY
complete January 2026
The Vineyard Groundwater Polishing Plant (GWPP) represents a transformative investment in Utah County’s long-term water infrastructure and sustainability. As a cornerstone facility within the Central Water Project, the GWPP provides an additional layer of advanced treatment to existing groundwater supplies, ensuring safe, reliable, and high-quality drinking water for the region’s rapidly expanding population. Designed by Jacobs and constructed by Alder Construction, the facility delivers an initial treatment capacity of approximately 30 MGD, with expansion to over 75 MGD at full buildout, utilizing advanced filtration and disinfection processes.
Located in Vineyard, Utah, the project features five major process areas—Unpolished Water and Chlorine Injection Vault (050), Chlorination Facility (080), Controls Facility (090), Groundwater Polishing Facility (100), and Residuals Systems (200–400)—that operate as an integrated network of treatment and monitoring systems. Each element was designed to meet rigorous CUWCD performance and sustainability goals.
Through innovation, precision, and teamwork, Alder Construction successfully delivered a facility that improves water quality, reduces operational costs, and enhances system resilience. The Vineyard Groundwater Polishing Plant sets a benchmark for collaboration between owner, engineer, and contractor—demonstrating how modern infrastructure can strengthen public health, community growth, and environmental stewardship across generations.
Central utah water conservancy district cwp vineyard groundwater polishing plant
complete march 2026
The water demands in Park City are very difficult and complicated. The City needs to provide culinary water to a growing city, large quantities of water for snow making at the resorts, irrigation water to agricultural users and to treat water high in metals from the existing mine tunnels. Park City partnered with Alder Construction through an early contractor involvement process--GM/GC--to help meet these goals. The new 3Kings Water Treatment Plant was designed to replace the old Spiro Water Treatment Plant and to improve the treatment capabilities of the Park City systems.
Construction included demolition of the old Spiro Water Treatment Plant and the construction of a brand new 6 MGD plant. Altogether, 48,000 square feet in eight new structures were built to house the brand new treatment process that includes: a micro-hydropower generation system; rapid mix and floc/sed systems; backwash and waste clarifiers; equalization basins; filtration and adsorption systems; mechanical dewatering and load out facilities; gravity thickeners; UV disinfection system; chemical feed systems; and an administration and maintenance facility.
The architectural and landscaping features of this project turned out to be amazing, such that the state-of-the-art facility blends into the surrounds with living roofs, wood siding and many more architectural features.
