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E2.2 Water Efficient Appliances


Plumbing fixtures and fittings shall be at least as water efficient as required by US Gren Building Council/LEED WEp1, Minimum Indoor Plumbing Fixture and Fitting Efficiency, located at 


All businesses that are building or modernizing buildings for their own use shall meet this requirement.




US Environmental Protection Agencies Water Sense® program for efficient fixtures and sensors:

CHPS Best Practices Manual, Volume II: Guideline OS6: Efficient Terminal Devices; OS7: Waterless Urinals.  

High-efficiency fixture and fitting standards are available through the American National Standards Institute (ANSI) as published by the American Society of Mechanical Engineers (ASME):  

Maximum Performance (MaP) tested toilet fixtures: 

Fixture/Fitting Type Maximum Water Consumption Other Requriements and Notes
Showerheads 2.00 gpm @ 80 psi Must be listed to WaterSense
Commerical labnatory faucets

0.50 gpm @ 60 psi

Lavatory faucets within a residence subject to 1.5 gpm maximum and must be listed to WaterSense

Metering faucets (self-closing)

0.20 gallons/cycle There is no maximum flow rate for metering faucets

Water closets - other than remote locations*

1.28 gallons/flush

Tank-type water closets must be listed to WaterSense

Water closets - remote locations*

1.60 gallons/flush

Urinals  0.50 gallons/flush

Flushing urinals must be listed to WaterSense

Commercial pre-rinse spray valves

1.30 gpm @ 60 psi

Must be listed to WaterSense

*This is not a comprehensive list.  Among other fixtures found in schools, there are food service fixtures and appliances that consume a considerable amount of water and should be included in the baseline as outlined in the implementation section above where appropriate and established limits have been set.

**Remote location is where a water closet is located at least 30 feet upstream of the nearest drain line connections or fixtures, and is located where less than 1.5 drainage fixture units are upstream of the water closet’s drain line connection.