WATER RESOURCE CONSERVATION, QUALITY AND EFFICIENCY

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1 CHAPTER 6 WATER RESOURCE CONSERVATION, QUALITY AND EFFICIENCY SECTION 601 (IgCC 701) GENERAL (IgCC 701.1) Scope. The provisions of this chpter shll estblish the mens of conserving wter, protecting wter qulity nd providing for sfe wter consumption (IgCC 701.2) Wter usge metering required. Wter consumed from ny source ssocited with the building or building site shll be metered. Ech potble nd reclimed source of wter, nd ech onsite nonpotble wter source, shll be metered seprtely. Meters shll be instlled in ccordnce with the requirements of the Interntionl Plumbing Code. For the purposes of Section (IgCC ), ech meter identified in Tble (IgCC Tble ) shll be cpble of communicting wter consumption dt remotely nd t minimum, be cpble of providing dily dt with electronic dt storge nd reporting cpbility tht cn produce reports tht show dily, monthly, nd nnul wter consumption. Exception: Fire sprinkler systems instlled in ccordnce with Section (IFC 90.) shll not be required to be metered (IgCC ) Individul metering required. All potble nd nonpotble wter supplied to the pplictions listed in Tble (IgCC Tble ) shll be individully metered in ccordnce with the requirements indicted in Tble (IgCC Tble ). Similr pplinces nd equipment shll be permitted to be grouped nd supplied from piping connected to single meter. Exception: In Group I-2 occupncies nd mbultory cre fcilities, wter used for ptient tretment or to support ptient cre shll not be required to be individully metered. SECTION 602 (IgCC 702) FIXTURES, FITTINGS, EQUIPMENT AND APPLIANCES (IgCC 702.1) Fitting nd fixture consumption. Fixtures shll comply with Tble (IgCC Tble 702.1) nd the following: 1. For dwelling unit nd guestroom shower comprtments with floor re of not greter thn 2600 in 2 (1.7 m 2 ), the combined flow rte from shower wter outlets tht re cpble of operting simultneously including rin systems, wterflls, body sprys nd jets shll not exceed 2.0 gllons per minute (gpm) (7.6 L/min). Where the floor re of such shower comprtments is greter thn 2600 in 2 (1.7 m 2 ), the combined flow rte from simultneously operting shower wter outlets APPLICATION TABLE (IgCC TABLE ) METERING REQUIREMENTS REQUIREMENTS Irrigtion Irrigtion systems tht re utomticlly controlled shll be metered. Tennt spces Tennt spces tht re estimted to consume over 1000 gllons of wter per dy shll be metered individully. Onsite wter collection systems The mkeup wter lines supplying onsite wter collection systems shll be metered. Ornmentl wter fetures Ornmentl wter fetures with permnently instlled wter supply shll be required to utilize meter on mkeup wter supply lines. Pools nd in-ground sps Indoor nd outdoor pools nd in-ground sps shll be required to utilize meter on mkeup wter supply lines. Open nd closed circuit cooling towers Cooling towers with flow through tower greter thn 500 gllons per minute shll be required to utilize meter on mkeup wter nd blow-down wter supply lines. Stem boilers The mkeup wter supply line to stem boilers nticipted to drw more thn 100,000 gllons nnully or hving rting of 500,000 Btu/h or greter shll be metered. Industril processes Industril processes consuming more thn 1,000 gllons per dy on verge shll be metered individully. Evportive coolers Evportive coolers supplying in excess of 0.6 gllons per minute, on verge, mkeup wter shll be metered. Fluid coolers nd chillers Wter-cooled fluid coolers nd chillers tht do not utilize closed-loop recircultion shll be metered. Mkeup wter for closed loop systems such s chilled wter nd hydronic systems Roof spry systems Mkeup wter supplying systems of 50 tons of cooling cpcity or 500,000 Btu/h of heting cpcity shll be metered. Roof spry systems for irrigting vegetted roofs or therml conditioning shll be metered. For SI: 1 gllon =.8 L, 1 gllon per minute =.8 Lpm, 1 ton = 12,000 Btu, 1 British therml unit per hour = kwh WATER EFFICIENCY PROVISIONS OF THE INTERNATIONAL GREEN CONSTRUCTION CODE 17

2 TABLE (IgCC TABLE 702.1) MAXIMUM FIXTURE AND FITTING FLOW RATES FOR REDUCED WATER CONSUMPTION f, g FIXTURE OR FIXTURE FITTING TYPE MAXIMUM FLOW RATE Showerhed 2.0 gpm t 80 psi nd WterSense lbeled Lvtory fucet nd br sink privte 1.5 gpm t 60 psi Lvtory fucet public (metered) 0.25 gpc b Lvtory fucet public (nonmetered) 0.5 gpm t 60 psi Kitchen fucet privte 1.8 gpm t 60 psi Kitchen nd br sink fucets in other thn dwelling units nd guestrooms 2.2 gpm t 60 psi Urinl 0.5 gpf nd WterSense lbeled or nonwter urinl Wter closet public nd remote c 1.6 gpf Wter closet public nd nonremote 1.28 gpf verge d, e Wter closet tnk type, privte 1.28 gpf nd WterSense lbeled d Wter closet flushometer type, privte 1.28 gpf e Prerinse spry vlves 1. gpm nd WterSense lbeled Drinking fountins (mnul) 0.7 gpm Drinking fountins (metered) 0.25 gpc b For SI: 1 foot = 04.8 mm, 1 gllon per cycle (gpc) =.8 Lpc, 1 gllon per flush (gpf) =.8 Lpf, 1 gllon per minute (gpm) =.8 Lpm, 1 pound per squre inch = kp.. Includes hnd showers, body sprys, rinfll pnels nd jets. Showerheds shll be supplied by utomtic compensting vlves tht comply with ASSE 1016/ASME A /CSA B nd tht re specificlly designed to function t the flow rte of the showerheds being used. b. Gllons per cycle of wter volume dischrged from ech ctivtion of metered fucet. c. A remote wter closet is wter closet locted not less thn 0 feet upstrem of other drin line connections or fixtures nd is locted where less thn 1.5 dringe fixture units re upstrem of the drin line connection. d. The effective flush volume for dul-flush wter closet is defined s the composite, verge flush volume of two reduced flushes nd one full flush. e. In public settings, the mximum wter use of dul flush wter closet is bsed solely on its full flush opertion; not n verge of full nd reduced volume flushes. f. Wter dispensers ssocited with drinking fountins shll not hve limittions for flow rte. g. Where fucet hs pot filler mode, the flow shll not exceed 22 gpm t 60 psi. Such fucets shll utomticlly return to the flow rte indicted in the tble when the pot filler mode ctivtion mechnism is relesed or when the fucet flow is turned off. shll not exceed 2.0 gpm (7.6 L/min) for ech dditionl 2600 in 2 (1.7 m 2 ) of floor re or portion thereof. 2. In gng shower rooms, the combined flow rte from shower wter outlets tht re cpble of operting simultneously, including rin systems, wterflls, body sprys nd jets, shll not exceed 2.0 gpm (7.6 L/ min) for every 1600 in 2 (1.01 m 2 ) or portion thereof of room floor re.. In shower comprtments required to comply with the requirements of Chpter (IBC Chpter 11), the combined flow rte from shower wter outlets tht re cpble of operting simultneously, including rin systems, wterflls, body sprys nd jets, shll not exceed 4.0 gpm (15.1 L/min) for every 2600 in 2 (1.7 m 2 ) or portion thereof of room floor re (IgCC 702.2) Combintion tub nd shower vlves. Tub spout lekge from combintion tub nd shower vlves tht occurs when the outlet flow is diverted to the shower shll not exceed 0.1 gpm, mesured in ccordnce with the requirements of ASME A /CSA B (IgCC 702.) Food estblishment prerinse spry vlves. Food estblishment prerinse spry vlves shll hve mximum flow rte in ccordnce with Tble (IgCC Tble 702.1) nd shll shut off utomticlly when relesed (IgCC 702.4) Drinking fountin controls. Drinking fountins equipped with mnully controlled vlves shll shut off utomticlly upon relese of the vlve. Metered drinking fountins shll comply with the flow volume specified in Tble (IgCC Tble 702.1) (IgCC 702.5) Applinces. Sections (IgCC ) through (IgCC ) shll regulte pplinces tht re not relted to spce conditioning (IgCC ) Clothes wshers. Clothes wshers of the type in the ENERGY STAR progrm s defined in ENERGY STAR Progrm Requirements, Product Specifiction for Clothes Wshers, Eligibility Criteri, shll hve wter fctor (WF) not exceeding 6.0 nd modified energy fctor (MEF) of not less thn (IgCC ) Ice mkers. Ice mkers shll not be wter cooled. Ice mkers producing cubed-type ice shll be ENERGY STAR qulified s commercil ice mchines. Ice mkers of type not currently ENERGY STAR qulified, such s flke, nugget or continuous-type ice mkers, shll not exceed the totl wter use of 25 gllons per 100 pounds (94 L per 45 kg) of ice produced (IgCC ) Stem cookers. Stem cookers shll consume not more thn the mounts indicted in Tble 50.1 (IgCC Tble ) (IgCC ) Dishwshers. Dishwshers shll be ENERGY STAR qulified where n ENERGY STAR ctegory exists for the specific dishwsher type. Where n ENERGY STAR ctegory does not exist, the dishwsher shll be in ccordnce with Tble (IgCC ). TABLE (IgCC TABLE ) MAXIMUM WATER CONSUMPTION FOR COMMERCIAL DISHWASHERS DISHWASHER TYPE MAXIMUM WATER CONSUMPTION Rckless conveyor 2.2 gllons per minute Utensil wsher 2.2 gllons per rck For SI: 1 gllon =.785 L, 1 gllon per minute =.785 Lpm (IgCC 702.6) Municipl reclimed wter. Where required by Tble 02.1 (IgCC Tble 02.1) nd where municipl reclimed wter is ccessible nd llowed for such use by the lws, rules nd ordinnces pplicble in the jurisdiction, it shll be supplied to wter closets, wter-supplied urinls, wter-supplied trp primers nd pplicble industril uses. A municipl reclimed wter supply shll be deemed WATER EFFICIENCY PROVISIONS OF THE INTERNATIONAL GREEN CONSTRUCTION CODE

3 ccessible where the supply is not greter tht 150 percent of the distnce tht the potble wter supply is from the lot boundry or the supply is within 100 feet (0.5 m) of potble wter supply tht serves the lot (IgCC 702.7) Hot nd tempered wter distribution. Wter supply piping shll be in ccordnce with Section (IgCC ) or Section (IgCC ). The flow rte through 1 / 4 -inch (6.4 mm) tubing shll not exceed 0.5 gpm (1.9 Lpm). The flow rte through 5 / 16 -inch (7.9 mm) tubing shll not exceed 1 gpm (.8 Lpm). The flow rte through -inch (9.5 mm) tubing shll not exceed 1.5 gpm (5.7 Lpm) (IgCC ) Mximum llowble pipe length method. The mximum llowble pipe length from the source of hot or tempered wter to the termintion of the fixture supply pipe shll be in ccordnce with the mximum pipe length columns in Tbles (2) [IgCC Tble (2)] through (10) [IgCC Tble (10)], s pproprite for the type of pipe to be instlled. Where the type of pipe to be instlled is unknown or the type of pipe is not covered by Tbles (2) [IgCC Tble (2)] through (10) [IgCC Tble (10)], Tble (1) [IgCC Tble (1)] shll be used for design purposes. Where the length contins more thn one size of pipe, the lrgest size shll be used for determining the mximum llowble length of the pipe in the tbles (IgCC ) Mximum llowble pipe volume method. The wter volume in the piping shll be clculted in ccordnce with Section (IgCC ). The mximum volume of hot or tempered wter in the piping to public lvtory fucets, metering or nonmetering, shll be 2 ounces (0.06 L). For fixtures other thn public lvtory fucets, the mximum volume shll be 64 ounces (1.89 L) for hot or tempered wter from wter heter or boiler; nd 24 ounces (0.7 L) for hot or tempered wter from circultion loop pipe or n electriclly het-trced pipe. The wter volume in the piping shll be clculted in ccordnce with Section (IgCC ) (IgCC ) Wter volume determintion. The volume shll be the sum of the internl volumes of pipe, fittings, vlves, meters nd mnifolds between the source of hot wter nd the termintion of the fixture supply pipe. The volume shll be determined from the liquid ounces per foot column of Tbles (2) [IgCC Tble (2)] through (10) [IgCC Tble (10)] s pproprite for the type of pipe. Where the type of pipe is unknown or the type of pipe is not covered by Tbles (2) [IgCC Tble (2)] through (10) [IgCC Tble (10)], Tble (1) [IgCC Tble (1)] shll be used to determine the volume. The volume contined within fixture shutoff vlves, flexible wter supply connectors to fixture fitting, or within fixture fitting shll not be included in the wter volume determintion. Where hot or tempered wter is supplied by circultion loop pipe or n electriclly het-trced pipe, the volume shll include the portion of the fitting on the source pipe tht supplies wter to the fixture (IgCC 702.8) Trp priming wter. Potble wter shll not be used for trp priming purposes where n lternte nonpotble onsite wter distribution system, reclimed wter distribution system or gry wter distribution system is vilble (IgCC ) Continuous opertion prohibited. Trp primers tht llow continuous wter flow shll be prohibited (IgCC ) Volume limittion. Trp primers shll be of the type tht use not more thn 0 gllons (114 L) per yer per trp (IgCC ) Wter criteri. Where nonpotble wter is vilble nd is lredy being used to supply plumbing fixtures, such wter shll be used to supply trp primers. TABLE (1) [IgCC TABLE (1)] VOLUME AND MAXIMUM LENGTH OF PIPE OR TUBE OF A TYPE UNKNOWN OR NOT COVERED b MAXIMUM PIPE OR TUBE LENGTH 1 / / or lrger The flow rte for 1 / 4 -inch size pipe or tube is limited to 0.5 gllons per minute; for 5 / 16 -inch size, it is limited to 1 gpm; for -inch size, it is limited to 1.5 gpm. b. Not covered mens pipe or tube types not covered by Tbles (2) [IgCC Tble (2)] through (10) [IgCC Tble (10)] WATER EFFICIENCY PROVISIONS OF THE INTERNATIONAL GREEN CONSTRUCTION CODE 19

4 TABLE (2) [IgCC TABLE (2)] VOLUME AND MAXIMUM LENGTH OF TYPE K COPPER TUBING -inch size is limited to 1.5 gllons per minute. System with het-trced line or lrger TABLE () [IgCC TABLE ()] VOLUME AND MAXIMUM LENGTH OF TYPE L COPPER TUBING or lrger TABLE (4) [IgCC TABLE (4)] VOLUME AND MAXIMUM LENGTH OF TYPE M COPPER TUBING or lrger WATER EFFICIENCY PROVISIONS OF THE INTERNATIONAL GREEN CONSTRUCTION CODE

5 TABLE (5) [IgCC TABLE (5)] VOLUME AND MAXIMUM LENGTH OF CPVC TUBING, CTS. Copper tube size outside dimeter dimension nd SDR or lrger TABLE (6) [IgCC TABLE (6)] VOLUME AND MAXIMUM LENGTH OF CPVC PIPE, SCHEDULE or lrger TABLE (7) [IgCC TABLE (7)] VOLUME AND MAXIMUM LENGTH OF CPVC PIPE, SCHEDULE or lrger WATER EFFICIENCY PROVISIONS OF THE INTERNATIONAL GREEN CONSTRUCTION CODE 21

6 TABLE (8) [IgCC TABLE (8)] VOLUME AND MAXIMUM LENGTH OF PE-AL-PE TUBING or lrger TABLE (9) [IgCC TABLE (9)] VOLUME AND MAXIMUM LENGTH OF PEX AND PE-RT TUBING, CTS b b. Copper tube size outside dimeter dimension nd SDR 9, for both PEX nd PE-RT types of tubing or lrger TABLE (10) [IgCC TABLE (10)] VOLUME AND MAXIMUM LENGTH OF PEX-AL-PEX TUBING / or lrger WATER EFFICIENCY PROVISIONS OF THE INTERNATIONAL GREEN CONSTRUCTION CODE

Chapter 6: Water Resource Conservation, Quality and Efficiency

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