📋 Tender Overview
ScopePortland is building a new filtration facility to keep our water safe and abundant for generations to come. The new filtration plant will remove the microorganism Cryptosporidium and must be completed by 2027 to comply with state and federal water quality rules. The filtration facility will also remove sediment organic material and other potential contaminants providing consistent high-quality drinking water and making the water system more reliable.Building a filtration facility of this size takes about a decade to plan design permit and construct. The Portland Water Bureau has already begun work on the initial steps and has made some key decisions about the future filtration facility .The new filtration facility will be located just outside the Bull Run Watershed in rural Multnomah County. Portland Water Bureau has owned the filtration facility property for decades and has been operating facilities in the area for more than 100 yearsThe new filtration facility will have a capacity between 145 and 160 million gallons per day mgd. This capacity continues Bull Run as Portlands main water supply meets water demands on most days in most years and manages costs by matching filtration facility size to expected water use.The new filtration facility will use granular media filtration where the water is filtered through natural materials charcoal sand and gravel. This is a proven technology used at almost all the large filtration facilities in North America. Granular media filtration is the lowest cost option that can provide the desired water quality. Granular media filtration also provides excellent water quality is flexible in adapting to different water conditions and new requirements and fits on the filtration facility site with room to meet future needs.
