The City and County of San Francisco (CCSF) requires property owners to install dual-plumbing systems for recycled water use in accordance with Ordinances 390-91, 391-91, and 393-94 (Article 22), within the designated recycled water use areas under the following circumstances:

• New or remodeled buildings and all subdivisions (except condominium conversions) with a total cumulative area of 40,000 square feet or more
  
• New and existing irrigated areas of 10,000 square feet or more

See the attached materials below for procedures to guide developers and property owners with the installation of recylced water service lines.