Building standards: residential property: graywater.

The California Building Standards Law provides for the adoption of building standards by state agencies by requiring all state agencies that adopt or propose adoption of any building standard to submit the building standard to the California Building Standards Commission for approval and adoption. Existing law requires the Department of Housing and Community Development to propose the adoption, amendment, or repeal of building standards to the commission relating to hotels, motels, lodging houses, apartment houses, and dwellings, and the buildings and structures accessory thereto, except as specified. Existing law requires the department to adopt and submit to the commission for approval building standards for the construction, installation, and alteration of graywater, as defined, systems for indoor and outdoor uses. This bill would require the department, on or after January 1, 2017, to adopt and submit to the commission for approval amendments to the building standards adopted pursuant to these provisions that require that all new single-family and duplex residential dwelling units include specified components to allow the separate discharge of graywater for direct irrigation and that all new single-family residential dwelling units include a segregated building drain for lavatories, showers, and bathtubs to allow for future installation of a distributed graywater system.