Innovative Engineering Delivers Efficiency and Reliability in CWLP’s Largest Water Infrastructure Investment in 60 Years

Water utilities are under increased pressure to keep rates under control, while complying with ever-increasing environmental regulations and responding to unpredictable rainfall patterns. The engineering industry is in a unique position to assist utilities in addressing these challenges. On the $40 million (construction costs) CWLP Water Works Improvement project, Crawford, Murphy & Tilly (CMT) and its team focused on designing an economical system with long-term benefits by maximizing efficiency and reliability at every turn.

This project represents the most significant infrastructure investment that CWLP has made in the last 60 years. It includes 52 MGD low-service and 60 MGD high-service pump stations, a six MG clearwell, a new separate intake and existing intake and tunnel improvements, along with associated site work, piping, and electrical components.

Efficiency was achieved through an innovative approach to automating the pumping system. CMT introduced an “optimal operating range” standard for the pumps by determining the best efficiency point for the flow and head combinations. Under automated control, the pumps will respond to current conditions and demand, and operate at 95% efficiency.

Reliability was one of the client’s overriding goals for this project. It was determined that the best way to provide this reliability would be through the strategic use of redundant equipment and systems, to a much higher degree than is usually provided on a project of this type or required by regulations or codes.

All CMT employees are genuinely concerned about satisfying CWLP needs.

Doug Brown, PE, CWLP Acting General Manger
Water Works Improvement Project, City Water, Light & Power