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NC-v4 WEc2:Indoor water use reduction

WEc2 - Indoor Water - waterflow

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Lise Dannesboe
Sustainability Manager
COWI
LEEDuser Premium Member
54 thumbs up

Hi.

The LEED Baseline for public lavatory faucets is 1.9 lpm, which seem very low compare to what is on the marked in Denmark. But is actually do to the 30 sec. duration - so the actual flow rate is 3.8 lpm? And how can the public lavatory and the private lavatory maximum be so different.

Could anyone recommend any manufacturer who can deliver the 1.9 lpm?

BR, Lise

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Profile picture for user lida
Lise Dannesboe
Sustainability Manager
COWI
LEEDuser Premium Member
54 thumbs up

Wed, 12/20/2017 - 15:36

WaterSense: https://www.epa.gov/sites/production/files/2017-01/documents/ws-products-spec-faucets.pdf   2.2 The flow rate of the lavatory faucet or the lavatory faucet accessory shall be tested in accordance with the procedures in ASME A112.18.1/CSA B125.1 and shall meet the following criteria: • The maximum flow rate shall not exceed 1.5 gallons per minute (gpm)3 (5.7 liters per minute [L/min]) at a pressure of 60 pounds per square inch (psi) at the inlet, when water is flowing; and
  • The minimum flow rate shall not be less than 0.8 gpm (3.0 L/min) at a
pressure of 20 psi at the inlet, when water is flowing.

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