Protecting San Francisco from Mosquitoes, One Storm Drain at a Time

Brought to You by the San Francisco Public Utilities Commission Wastewater Collection System Division

Since the Emergency Public Health Declaration of 2005 for West Nile Virus, the San Francisco Wastewater Enterprise Mosquito Storm Drain Program has been in effect.

As part of the City and County of San Francisco’s Green Purchasing efforts, the MAC Team treats the citywide combined sewer system storm drains throughout San Francisco streets to prevent mosquitoes and protect the health of residents and visitors.

The work is human-powered to reduce our footprint in the atmosphere and our space here on the ground. The treatments made in the city’s storm drains are target-specific and reduced-risk to the team, the community, and the Bay.