California Green Building Code (CALGreen) – Water conserving plumbing fixtures and fittings

To lower the amount of potable water used inside by allowing nonwater-supplied urinals as a fixture. To reduce water use and the corresponding energy consumption, a variety of technologies and strategies can be used. These include water-saving plumbing devices like waterless urinals, ultra-low-flow toilets, sinks with flow restrictions, and showerheads, as well as dishwashers and washing machines.

CALGreen Code Section A5.303.4: Water conserving plumbing fixtures and fittings

CALGreen Code Section A5.303.4.1: Nonwater supplied urinals.

Nonwater supplied urinals are installed in accordance with the California Plumbing Code. Where approved, hybrid urinals, as defined in Chapter 2, shall be considered waterless urinals.


The intent of this measure is to reduce indoor potable water use by providing nonwater supplied urinals as an allowed fixture. A wide range of technologies and measures can be employed to save water and associated energy consumption. These include water-efficient plumbing fixtures such as ultra-low-flow toilets and urinals, waterless urinals, low-flow and censored sinks, low-flow showerheads, and water-efficient dishwashers and washing machines. This measure will align with the residential code section that allows nonwater supplied urinals as an option, which adds consistency between the residential and nonresidential codes.

Compliance Method:

Show on the construction documents nonwater supplied urinals that meet the requirements as shown in the California Plumbing Code. Note that the California Plumbing Code requires a water distribution line to be roughed-in to each nonwater supplied urinal along with other requirements.


Plan intake: The plan reviewer should confirm in the construction documents that nonwatery supplied urinals shown on the construction documents meet the requirements of the California Plumbing Code.

On-site enforcement: The inspector should verify that the specified nonwater supplied urinals are installed in accordance with the manufacturer recommendations and with the applicable provisions in the California Plumbing Code.

(Excerpted from ‘Guide to the 2022 California Green Building Standards Code Nonresidential’ – Appendix A5)

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