Arcadia Lake WTP Process Improvements

The Arcadia Lake Water Treatment Plant (ALWTP) Expansion is a major multi-phase program designed to increase the City of Edmond’s surface-water treatment capacity from 10–12 MGD to 30 MGD, while also enhancing overall water quality, system reliability, and long-term operational resilience. Key improvements include a new raw-water intake and low-lift pump station on Arcadia Lake, large-diameter raw-water transmission piping, granular activated carbon (GAC) filtration, two 4-million-gallon clearwells, equalization basins, a backwash and recycle system, extensive yard piping, and a new high-service pump station that delivers finished water into the Edmond distribution network. These upgrades significantly reduce the City’s reliance on groundwater wells and purchased water from Oklahoma City, positioning Edmond to meet future demand with a secure and sustainable water supply.
________________________________________
We supplied approximately 7,000 feet of AWWA C200 steel pipe ranging from 66 inches down to 20 inches OD. The project required a wide range of coatings, linings, fittings, and joint types to meet the structural, hydraulic, and installation demands of the upgraded treatment facilities.
Pipe Coatings & Linings
• Yard piping: Cement-mortar coated and lined
• Above-ground piping: Liquid-epoxy coated and lined
With all linings being NSF 61 Certified
Fittings, Joints & Reinforcements
The project utilized an extensive variety of specialized fittings and joint configurations, including:
• 30 Dismantling Joints
• 55 Flexible Couplings
• 2 Flanged Coupling Adapters
• Hundreds of slip-on flanges (Classes D and E)
• Pipe reinforcements, including:
o Crotch plates
o Wrapper plates
o Collar plates
Double-flex coupling assemblies were installed at each building entry to accommodate pipeline deflection and differential settlement, ensuring long-term structural stability and ease of maintenance.