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412.1.3 Nonwater Urinals
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Nonwater urinals shall have a liquid barrier sealant to maintain a trap seal. Nonwater
urinals shall permit the uninhibited flow of waste
through the urinal to the sanitary drainage system. Nonwater
urinals shall be cleaned and maintained in accordance
with the manufacturer's instructions after
installation. Where nonwater urinals are installed, not
less than one water supplied fixture rated at not less than
1 water supply fixture unit (WSFU) shall be installed
upstream on the same drain line to facilitate drain line
flow and rinsing. Where nonwater urinals are installed,
they shall have a water distribution line rough-in to each individual urinal location to allow for the installation of
an approved backflow prevention device in the event of
a retrofit. For additional information, see Health and
Safety Code Section 17921.4.