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Human Waste Treatment and Water Reuse at Hassalo on Eighth

American Assets Trust developed this mixed-use three-building project that spans four blocks as part of Portland’s Lloyd EcoDistrict. The three buildings share one of the largest natural organic recycling treatment systems in the US, which treats all the buildings’ wastewater (including human waste from toilets) for reuse for toilet flushing, mechanical cooling and below surface landscape irrigation in an urban setting.  It was permitted as a Water Pollution Control Facility with two on-site injection dry wells. The project showcases the economic and ecological benefits of district scale onsite wastewater treatment and reuse.