Planters inside and outside the building filter the building’s wastewater through a process similar to that employed naturally in a wetland. Rainwater is harvested and used throughout the project for irrigation, storing up to 250,000 gallons of water per year for use by the exterior irrigation systems. These new systems have begun a dialogue for a potential paradigm shift in the way we think about using water and has already resulted in a policy change with the San Francisco Department of Public Health.