WATER RESOURCE CONSERVATION, QUALITY AND EFFICIENCY
The provisions of this chapter shall establish the means of conserving water, protecting water quality and providing for safe water consumption.
FIXTURES, FITTINGS, EQUIPMENT AND
702.1 Fitting and fixture consumption.
Fixtures shall comply with Table 702.1 and the following:
1. For dwelling unit and guestroom shower compartments with a floor area of not greater than 2600 in2 (1.7 m2), the combined flow rate from shower water outlets that are capable of operating simultaneously including rain systems, waterfalls, body sprays and jets shall not exceed 2.0 gallons per minute (gpm) (7.6 L/min). Where the floor area of such shower compartments is greater than 2600 in2 (1.7 m2), the combined flow rate from simultaneously operating shower water outlets shall not exceed 2.0 gpm (7.6 L/min) for each additional 2600 in2 (1.7 m2) of floor area or portion thereof.
2. In gang shower rooms, the combined flow rate from shower water outlets that are capable of operating simultaneously including rain systems, waterfalls, body sprays and jets shall not exceed 2.0 gpm (7.6 L/min) for every 1600 in2 (1.01 m2) or portion thereof of room floor area.
3. In shower compartments required to comply with the requirements of Chapter 11 of the International Building Code, the combined flow rate from shower water outlets that are capable of operating simultaneously including rain systems, waterfalls, body sprays and jets shall not exceed 4.0 gpm (15.1 L/min) for every 2600 in2 (1.7 m2) or portion thereof of room floor area.
MAXIMUM FIXTURE AND FITTING FLOW RATES
FOR REDUCED WATER CONSUMPTION
|FIXTURE OR FIXTURE FITTING TYPE||MAXIMUM FLOW RATE|
|Showerheada||2.0 gpm and WaterSense labeled|
|Lavatory faucet and bar sink—private||1.5 gpm|
|Lavatory faucet—public (metered)||0.25 gpcb|
|Lavatory faucet—public (nonmetered)||0.5 gpm|
|Kitchen faucet—private||2.2 gpm|
|Kitchen and bar sink faucets in other |
than dwelling units and guestrooms
|Urinal||0.5 gpf and WaterSense labeled or nonwater urinal|
|Water closet—public and remotec||1.6 gpf|
|Water closet—public and nonremote||1.28 gpf averaged, e|
|Water closet-tank type, private||1.28 gpf and WaterSense labeledd|
|Water closet—flushometer type, private||1.28 gpfe|
|Prerinse spray valves||1.3 gpm|
|Drinking fountains (manual)||0.7 gpm|
|Drinking fountains (metered)||0.25 gpcb|
|For SI: 1 foot = 304.8 mm, 1 gallon per cycle (gpc) = 3.8 Lpc, 1 gallon per flush (gpf) = 3.8 Lpf, 1 gallon per minute (gpm) = 3.8 Lpm.|
|a. Includes hand showers, body sprays, rainfall panels and jets. Showerheads shall be supplied by automatic compensating valves that comply with ASSE 1016 or ASME A112.18.1/CSA B125.1 and that are specifically designed to function at the flow rate of the showerheads being used.|
|b. Gallons per cycle of water volume discharged from each activation of a metered faucet.|
|c. A remote water closet is a water closet located not less than 30 feet upstream of other drain line connections or fixtures and is located where less than 1.5 drainage fixture units are upstream of the drain line connection.|
|d. The effective flush volume for a dual-flush water closet is defined as the composite, average flush volume of two reduced flushes and one full flush.|
|e. In public settings, the maximum water use of a dual flush water closet is based solely on its full flush operation; not an average of full and reduced volume flushes.|
702.2 Combination tub and shower valves.
Tub spout leakage from combination tub and shower valves that occurs when the outlet flow is diverted to the shower shall not exceed 0.1 gpm, measured in accordance with the requirements of ASME A112.18.1/CSA B125.1.
702.3 Food establishment prerinse spray valves.
Food establishment prerinse spray valves shall have a maximum flow rate in accordance with Table 702.1 and shall shut off automatically when released.
702.4 Drinking fountain controls.
Drinking fountains equipped with manually controlled valves shall shut off automatically upon the release of the valve. Metered drinking fountains shall comply with the flow volume specified in Table 702.1.
702.5 Nonwater urinal connection.
The fixture drain for nonwater urinals shall connect to a branch drain that serves one or more lavatories, water closets or water-using urinals that discharge upstream of such urinals.