Product Water Efficiency Positions
Residential Products & Applications
Product: Gravity Flush Toilets (single and dual flush)
Timing: 1/1/14
Position: 1.28 gpf (per ASME A112.19.2-2008/CSA B45.1-08) & 350 grams MaP (cased or uncased)
Notes: Note WaterSense HET Specification as source. Emphasize 2014 as the time required to provide a wide range of models and types for consumers to select from.
Product: Pressure Assist Toilets
Timing: 1/1/14
Position: 1.28 gpf (per ASME A112.19.2-2008/CSA B45.1-08) & 350 grams MaP (cased or uncased)
Notes: Note WaterSense HET Specification as source.
Product: Bidets
Timing: Now
Position: >1.5 gpm @ 20 psi - no maximum flow
Notes: Minimum flow in A112.18.1/B125.1‐2011 is currently 1.5 gpm at 20 psi. Maximum flow rate specification possible in the future, but the total flow resulting from bidets nationwide is minimal.
Product: Lavatory Faucets
Timing: 1/1/2010
Position: 1.5 gpm @ 60 psi & 0.8 gpm @ 20 psi
Notes: Note WaterSense HEL Specification as source.
Product: Kitchen Sink Faucets
Timing: Now
Position: 2.2 gpm @ 60 psi
Notes: Maintain EPAct 1992. Used for filling operations, therefore further restrictions are not appropriate.
Product: Bar Faucets
Timing: Now
Position: 2.2 gpm @ 60 psi
Notes: Maintain EPAct 1992. Used for filling operations, therefore further restrictions are not appropriate.
Product: Pot Filler Faucets
Timing: Now
Position: No restrictions
Notes: Used primarily for filling operations, therefore restrictions are not appropriate.
Product: Bath Faucets
Timing: Now
Position: 2.4 gpm @ 20 psi. No maximum flow.
Notes: Used for filling operations, no restrictions are appropriate.
Product: Electronic Self Closing Lavatory Faucets
Timing: Now
Position: Same as manual lavatory faucets (1.5 gpm @ 60 psi & 0.8 gpm @ 20 psi for residential)
Notes:Maximum timeout contemplated but not included, since levels should describe normal operation. No reason to include a vandal resistance feature when manual faucets could also be left on, causing waste.
Product: Utility Faucet
Timing: Now
Position: No restrictions.
Notes: Used primarily for filling operations, therefore restrictions are not appropriate.
Product: Service Sinks
Timing: Now
Position: No restrictions.
Notes: Used primarily for filling operations, therefore restrictions are not appropriate.
Product: Showerheads
Timing: Now
Position: 2.0 gpm @ 20‐80 psi
Notes: Note WaterSense specification.
Product: Shower Compartment
Timing: Now
Position: No limit.
Product: Combination Tub/Shower Valve Tub Spout Leakage
Timing: Now
Position: Maintain leakage rate limits in current standard (< 400 mL/min (0.1 gpm))
Notes: Based on provisions in 5.3.6.1.1 in ASME A112.18.1/CSA B125.1‐2011
Product: Bathtubs
Timing: Now
Position: No restrictions
Product: Plumbing System Design
Timing: Now
Position: Promote choice between manifold distribution systems, core/compact design, demand‐initiated hot water recirculation system. Green or efficient systems should store no more than 0.60 gallons of water in any piping / manifold between the hot water source and any hot water fixture, and all main hot water distribution and trunk lines should be insulated to R4, especially those leading directly from the water heater
Notes: Based on revised version of WaterSense New Homes Specifications for plumbing system design. Maintain 0.6 gallon figure even if WaterSense makes a change, as any number lower than this excludes options other than demand‐based recirculation systems.
Product: Food Waste Disposers
Timing: Now
Position: The use of residential food waste disposers is encouraged in green and sustainability programs.
Notes: Use of residential food waste disposers should be encouraged as an environmentally preferable means of disposing of food waste by providing a sanitary and efficient means of transporting waste products for efficient processing at wastewater treatment plants. They divert organics away from landfills, reducing pressure on solid waste disposal. This not only reduces greenhouse gas emissions at landfills, but also allows for recycling of nutrients in the form of beneficially reusable biosolids, and facilitates conversion of waste products into energy resources in the form of methane gas generated through anaerobic digestion
Commercial Products & Applications
Product: Gravity Flush Toilets (single and dual flush)
Timing: 1/1/2014
Position: 1.6 gpf (per ASME A112.19.2-2008/CSA B45.1-08) & 350 grams MaP (cased or uncased)
Notes: Note WaterSense HET Specification as source. Emphasize 2014 as the time required to provide a wide range of models and types for consumers to select from. Preserve the option to use 1.6 gpf toilets until more research becomes available on commercial drainline carry.
Product: Pressure Assist Toilets
Timing: 1/1/2014
Position: 1.6 gpf (per ASME A112.19.2-2008/CSA B45.1-08) & 350 grams MaP (cased or uncased)
Notes: Note WaterSense HET Specification as source. Preserve the option to use 1.6 gpf toilets until more research becomes available on commercial drainline carry.
Product: Flushometer Type Toilets
Timing: Now
Position: 1.6 gpf and preserve the right to use HET products where deemed appropriate
Notes: Maintain EPAct 1992
Product: Water‐Consuming Urinals
Timing: 1/1/2010
Position: 0.5 gpf for valves and fixtures
Notes: Note WaterSense HEU specification. Exempt blow‐out urinals.
Product: Waterless Urinals
Timing: Now
Position: Permitted for optional use. Caveats: A112.19.19‐2006 Compliant, A112.19.19‐2006 Third‐Party Listed by ANSI Accredited Certification, Trap seal approved by building code of local jurisdiction,uninhibited flow of waste to drain, maintained, cleaned according to mfg specifications, and installed with water supply rough‐in.
Notes: Per caveats placed in AB 715 in CA and proposed in TX.
Product: Bidets
Timing: Now
Position: >1.5 gpm @ 20 psi - no maximum flow
Notes: Minimum flow in A112.18.1/B125.1‐2011 is currently 1.5 gpm at 20 psi. Maximum flow rate specification possible in the future, but the total flow resulting from bidets nationwide is minimal.
Product: Bar Faucets
Timing: Now
Position: 2.2 gpm @ 60 psi
Notes: Maintain EPAct 1992. Used for filling operations, therefore further restrictions are not appropriate.
Product: Pot Filler Faucets
Timing: Now
Position: No restrictions
Notes: Used primarily for filling operations, therefore restrictions are not appropriate.
Product: Kitchen Sink Faucets
Timing: Now
Position: 2.2 gpm @ 60 psi
Notes: Maintain EPAct 1992. Used for filling operations, therefore further restrictions are not appropriate.
Product: Public Lavatory Faucets Timing: Now
Position: 0.5 gpm @ 60 psi
Product: Public Metering Faucets (mechanical or electronic)
Timing: Now
Position: 0.25 gpc
Notes: Ultimately differentiate between mechanical and electronic metering faucets in standards
Product: Public Electronic Self Closing Lavatory Faucets
Timing: Now
Position: Same as manual lavatory faucets (0.5 gpm @ 60 psi for public)
Notes: Maximum timeout contemplated but not included, since levels should describe normal operation. No reason to include a vandal resistance feature when manual faucets could also be left on causing waste.
Product: Utility Faucet
Timing: Now
Position: No restrictions
Notes: Used primarily for filling operations, therefore restrictions are not appropriate.
Product: Laboratory Faucets
Timing: Now
Position: No restrictions
Notes: Used primarily for filling operations, therefore restrictions are not appropriate.
Product: Service Sinks
Timing: Now
Position: No restrictions
Notes: Used primarily for filling operations, therefore restrictions are not appropriate.
Product: Pre-rinse Spray Valves
Timing: Now
Position: 1.6 gpm @ 60 psi
Notes: Maintain EPAct 2005. No reference should be made to ASTM 2324. Further changes should await the outcome of efforts by ASME/CSA and WaterSense in this area.
Product: Emergency Eyewash and Shower Equipment
Timing: Now
Position: No restrictions
Notes: Minimum flow 0.4 gpm. Industry norm is 2 gpm. Equipment included aligns with Z358.1 standard. Flow limitations would interfere with proper operation of these devices.
Product: Showerheads
Timing: Now
Position: 2.0 gpm @ 20‐80 psi
Notes: Note WaterSense specification.
Product: Shower Compartment
Timing: Now
Position: No limit.
Product: Drinking Fountains (manual)
Timing: Now
Position: 0.7 gpm @ 60 psi per bubbler head and automatic shutoffs should be required.
Notes: Common flowrate is 0.5 gpm @ 60 psi. No current limitations in any relevant standards.
Product: Drinking Fountains (metered)
Timing: Now
Position: 0.25 gallons per cycle
Notes: Per ASME A112.18.1/CSA B125.1-2011
Product: Food Waste Disposers
Timing: Now
Position: The use of commercial food waste disposers is encouraged in green and sustainability programs.
Notes: The use of commercial food waste disposers should be encouraged as an environmentally preferable means of disposing of food waste by providing a sanitary and efficient means of transporting waste products for efficient processing at wastewater treatment plants. They divert organics away from landfills, reducing pressure on solid waste disposal. This not only reduces greenhouse gas emissions at landfills, but also allows for recycling of nutrients in the form of beneficially reusable biosolids, and facilitates conversion of waste products into energy resources in the form of methane gas generated through anaerobic digestion.