Our team provided planning and engineering design for a new water treatment plant for the city of Billings, Montana, to supplement treated water provided by an existing facility.
The new West End Water Treatment Plant is designed to draw source water from the Yellowstone River — via the Billings Bench Water Association (BBWA) canal — and from new water storage reservoirs. With a designed flow rate of 18 million gallons per day, the plant gives the growing community additional treatment capacity. It also provides a redundant source of treated water, in case the city’s existing plant is shut down for maintenance or river water is temporarily compromised.
Our team launched the project in the study phase with conceptual and planning services, including raw water analysis, a basis of design report, process selection and jar testing. Process evaluation included pretreatment, filtration and disinfection systems. The pretreatment system includes rapid mix, flocculation, lamella plate settlers, membrane filtration, a clear well and a high-service pump station. In addition, our team designed chemical feed systems for sodium hypochlorite, polyaluminum chloride, ferric chloride, sulfuric acid, citric acid, sodium bisulfite and caustic soda.
Beyond the main facility, the design includes a new transmission main and a sanitary sewer extension.