1. Each public building sponsored or financed by a public body must meet the standards made applicable for the building pursuant to this section.

2. Except as otherwise provided in subsection 6, each public building, other than a prison or jail, on which construction begins on or after March 1, 1992, and before March 1, 1993, and each existing public building which is expanded or renovated 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.

(d) A toilet or urinal which employs a timing device or other mechanism to flush periodically irrespective of demand must not be installed.

3. Except as otherwise provided in subsection 6, each public building, other than a prison or jail, on which construction begins on or after March 1, 1993, and before January 1, 2020, and each existing public building which is expanded or renovated 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) A urinal which uses water must not be installed unless its consumption of water does not exceed 1 gallon of water per flush.

(d) A toilet or urinal which employs a timing device or other mechanism to flush periodically, irrespective of demand, must not be installed.

(e) A urinal which continually flows or flushes water must not be installed.

(f) Each faucet installed in a lavatory or kitchen must not allow water to flow at a rate greater than 2.5 gallons per minute.

(g) Each faucet installed in a public restroom must contain a mechanism which closes the faucet automatically after a predetermined amount of water has flowed through the faucet. Multiple faucets that are activated from a single point must not be installed.

4. Except as otherwise provided in subsection 6, each public building, other than a prison or jail, on which construction begins on or after January 1, 2020, and each existing public building which is expanded or renovated 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.

5. For the purposes of subsection 4, 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.

6. The requirements of this section for the installation of certain plumbing fixtures do not apply to any portion of:

(a) An existing public building which is not being expanded or renovated; or

(b) A public building if the public building was constructed 50 years or more before the current year, regardless of whether that public building has been expanded or renovated since its original construction.

(Added to NRS by 1991, 1168; A 2019, 2102, effective January 1, 2020)