Storm Water Management

The City of San Francisco classically has directed all surface water to sanitary sewer treatment plants, in what is known as a “combined” system (storm and sanitary waste in the same system). Very few areas of San Francisco are serviced by a separated storm / sanitary system as indicated by the map. All surface runoff in these areas are directed to storm drains which in turn flow to the bay untreated.


EHS Categories

Environmental Safety