Effective December 1, 2009, all plumbing installations in new buildings and installations of new plumbing fixtures in existing buildings shall meet the following requirements:
(a) Toilets. All toilets installed shall be high efficiency fixtures. The maximum flush volume for high efficiency toilets shall not exceed 1.28 gallons of water (effective) per flush (gpf).
(b) Urinals. All urinals installed shall be high efficiency fixtures. The maximum flush volume of high efficiency urinals shall not exceed 0.5 gallon of water per flush. Effective October 1, 2010, the maximum flush volume of high efficiency urinals shall not exceed 0.125 gallon of water per flush.
(c) Faucets. All faucets in public restrooms must be self closing. The flow rate for all indoor faucets shall be 2.2 gallons per minute (gpm) except as follows:
• The maximum flow rate for private or private use lavatory faucets shall be 1.5 gpm (5.6 Lpm).
• The maximum flow rate for public use lavatory faucets, shall be 0.5 gpm. Exception: Metering faucets shall deliver not more than 0.25 gallon (1.0 liter) of water per cycle.
• The maximum flow rate for a pre-rinse spray valve installed in a commercial kitchen to remove food waste from cookware and dishes prior to cleaning shall be 1.6 gpm (6.0 Lpm).
(d) Showerheads. All showerheads must be low flow with a maximum flow rate that does not exceed 2.0 gallons per minute. This requirement shall not apply to any emergency showerhead installed for health or safety purposes.
(e) Dishwashers.
1. The maximum water use for high efficiency commercial dishwashers shall be in accordance with Table 1.
Type | High-Temperature Maximum gallons per rack | Chemical- Maximum gallons per rack |
Conveyer | 0.70 | 0.62 |
Door | 0.95 | 1.16 |
Undercounter | 0.90 | 0.98 |
2. The maximum water use per washing cycle for high efficiency domestic dishwashers shall be 5.8 gallons.
All installed dishwashers must be Energy Star® rated.
(f) Cooling Towers. All cooling towers must be operated at a minimum of 5.5 cycles of concentration.
(g) Use of Single Pass Cooling Systems. Single pass cooling systems are strictly prohibited for use in devices, processes, or equipment installed in commercial, industrial, or multi family residential buildings. This prohibition shall not apply to devices, processes, or equipment installed for health or safety purposes that cannot operate safely otherwise.