1. Each manufactured building on which construction begins on or after March 1, 1992, and before March 1, 1993, must incorporate the following minimal standards for plumbing fixtures:
(a) A toilet which uses water must not be installed unless its consumption of water does not exceed 3.5 gallons of water per flush.
(b) A shower apparatus which uses more than 3 gallons of water per minute must not be installed unless it is equipped with a device to reduce water consumption to 3 gallons of water or less per minute.
(c) Each faucet installed in a lavatory or kitchen must not allow water to flow at a rate greater than 3 gallons per minute.
2. Each manufactured building on which construction begins on or after March 1, 1993, and before January 1, 2020, must incorporate the following minimal standards for plumbing fixtures:
(a) A toilet which uses water must not be installed unless its consumption of water does not exceed 1.6 gallons of water per flush.
(b) A shower apparatus which uses more than 2.5 gallons of water per minute must not be installed unless it is equipped with a device to reduce water consumption to 2.5 gallons of water or less per minute.
(c) Each faucet installed in a lavatory or kitchen must not allow water to flow at a rate greater than 2.5 gallons per minute.
3. Each manufactured building on which construction begins on or after January 1, 2020:
(a) If the WaterSense program established by the United States Environmental Protection Agency has developed a final product specification for a type of toilet, shower apparatus, urinal or faucet, must not install any toilet, shower apparatus, urinal or faucet that has not been certified under the WaterSense program.
(b) If the WaterSense program has not developed a final product specification for a type of toilet, shower apparatus, urinal or faucet, must not install any toilet, shower apparatus, urinal or faucet that does not comply with any applicable requirements of federal law and the building code of the county or city.
4. For the purposes of subsection 3, a plumbing fixture is considered certified under the WaterSense program if the fixture meets the requirements of paragraph (a) or (b) of subsection 5 of NRS 278.582.
(Added to NRS by 1991, 1169; A 2019, 2103, effective January 1, 2020)