Stormwater runoff starts out as relatively pure rainwater, but collects pollutants and toxins as it flows over impervious surfaces on its way into the San Francisco Bay. These polluted stormwater flows are the Bay’s biggest pollutant by volume and thus incredibly detrimental to its ecosystem.
The Urban Runoff Project seeks to slow down the rapid flow of stormwater by creating pervious surfaces where possible, capturing rainwater and storing it in cisterns incorporated into buildings, bridges, and other civi infrastructure. Water is filtered and reused, decreasing the city’s dependence on far-off water sources.