(a) Each handwashing sink shall be provided with hot and cold water tempered by means of a mixing valve or combination faucet.
(b) A self-closing, slow-closing, or metering faucet shall provide a flow of water for at least fifteen (15) seconds without the need to reactivate the faucet.
(c) A steam-mixing valve may not be used at a handwashing sink.
(d) An automatic handwashing facility shall be installed in accordance with manufacturer's instructions.
010-8 Wyo. Code R. § 8-55