The San Francisco Department of Sanitation, or simply sanitation department, was the government department run by the City of San Francisco responsible for collecting garbage. This department operated rear loading garbage trucks.
In 1986, two employees from this department were collecting garbage in the Golden Gate Park when the HMS Bounty landed. (Star Trek IV: The Voyage Home)
The name of this department is seen briefly on the driver's door as the "City of San Francisco Department of Sanitation".
In 2024, during the Bell Riots, Jadzia Dax successfully passed through the Sanitation Department checkpoint with a recoded identification card. (DS9: "Past Tense, Part II")