Log in
LEED v4
Neighborhood Development Plan
Green infrastructure & buildings
Indoor water use reduction

LEED CREDIT

ND-Plan-v4 GIBp3: Indoor water use reduction Required

LEEDuser’s viewpoint

Explore this LEED credit

Post your questions on this credit in the forum, and click on the credit language tab to review to the LEED requirements.

Credit language

USGBC logo

© Copyright U.S. Green Building Council, Inc. All rights reserved.

Intent

To reduce indoor water consumption.

Requirements

Nonresidential buildings, mixed-use buildings, and multifamily residential buildings four stories or more

For new buildings and buildings undergoing major renovations as part of the project, reduce indoor water usage by an average of 20% from a baseline. All newly installed toilets, urinals, private lavatory faucets, and showerheads that are eligible for labeling must be WaterSense labeled (or a local equivalent for projects outside the U.S.).

For the fixtures and fittings listed in Table 1, as applicable to the project scope, reduce water consumption by 20% from the baseline. Base calculations on the volumes and flow rates shown in Table 1.

The design case is calculated as a weighted average of water usage for the buildings constructed as part of the project based on their floor area.

Table 1. Baseline water consumption of fixtures and fittings

Commercial Fixtures, Fittings, and Appliances Current Baseline (IP Units) Current Baseline (SI units)
Water closets (toilets)* 1.6 gallons per flush (gpf) 6 liters per flush (lpf)
Urinal* 1.0 (gpf) 3.8 lpf
Public lavatory (restroom) faucet 0.5 gpm at 60 psi all others except private applications 1.9 lpm at 415 kPa, all others except private applications
Private lavatory faucet* 2.2 gpm at 60 psi 8.3 lpm at 415 kPa
Kitchen faucet (excluding faucets used exclusively for filling operations) 2.2 gpm at 60 psi 8.3 lpm at 415 kPa
Showerhead* 2.5 gpm at 80 psi per shower stall 9.5 lpm at 550 kPa per shower stall
* WaterSense label available for this product type
gpf = gallons per flush
gpm = gallons per minute
psi = pounds per square inch
lpf = liters per flush
lpm = liters per minute
kPa = kilopascals
New single-family residential buildings and new multiunit residential buildings three stories or fewer

90% of residential buildings must use a combination of fixtures and fittings that would earn 2 points under LEED v4 Building Design and Construction: Homes and Multifamily Lowrise WE Credit Indoor Water Use.

See all forum discussions about this credit »

What does it cost?

Cost estimates for this credit

On each BD+C v4 credit, LEEDuser offers the wisdom of a team of architects, engineers, cost estimators, and LEED experts with hundreds of LEED projects between then. They analyzed the sustainable design strategies associated with each LEED credit, but also to assign actual costs to those strategies.

Our tab contains overall cost guidance, notes on what “soft costs” to expect, and a strategy-by-strategy breakdown of what to consider and what it might cost, in percentage premiums, actual costs, or both.

This information is also available in a full PDF download in The Cost of LEED v4 report.

Learn more about The Cost of LEED v4 »

Documentation toolkit

The motherlode of cheat sheets

LEEDuser’s Documentation Toolkit is loaded with calculators to help assess credit compliance, tracking spreadsheets for materials, sample templates to help guide your narratives and LEED Online submissions, and examples of actual submissions from certified LEED projects for you to check your work against. To get your plaque, start with the right toolkit.

USGBC logo

© Copyright U.S. Green Building Council, Inc. All rights reserved.

Intent

To reduce indoor water consumption.

Requirements

Nonresidential buildings, mixed-use buildings, and multifamily residential buildings four stories or more

For new buildings and buildings undergoing major renovations as part of the project, reduce indoor water usage by an average of 20% from a baseline. All newly installed toilets, urinals, private lavatory faucets, and showerheads that are eligible for labeling must be WaterSense labeled (or a local equivalent for projects outside the U.S.).

For the fixtures and fittings listed in Table 1, as applicable to the project scope, reduce water consumption by 20% from the baseline. Base calculations on the volumes and flow rates shown in Table 1.

The design case is calculated as a weighted average of water usage for the buildings constructed as part of the project based on their floor area.

Table 1. Baseline water consumption of fixtures and fittings

Commercial Fixtures, Fittings, and Appliances Current Baseline (IP Units) Current Baseline (SI units)
Water closets (toilets)* 1.6 gallons per flush (gpf) 6 liters per flush (lpf)
Urinal* 1.0 (gpf) 3.8 lpf
Public lavatory (restroom) faucet 0.5 gpm at 60 psi all others except private applications 1.9 lpm at 415 kPa, all others except private applications
Private lavatory faucet* 2.2 gpm at 60 psi 8.3 lpm at 415 kPa
Kitchen faucet (excluding faucets used exclusively for filling operations) 2.2 gpm at 60 psi 8.3 lpm at 415 kPa
Showerhead* 2.5 gpm at 80 psi per shower stall 9.5 lpm at 550 kPa per shower stall
* WaterSense label available for this product type
gpf = gallons per flush
gpm = gallons per minute
psi = pounds per square inch
lpf = liters per flush
lpm = liters per minute
kPa = kilopascals
New single-family residential buildings and new multiunit residential buildings three stories or fewer

90% of residential buildings must use a combination of fixtures and fittings that would earn 2 points under LEED v4 Building Design and Construction: Homes and Multifamily Lowrise WE Credit Indoor Water Use.

See all LEEDuser forum discussions about this credit » Subscribe to new discussions about ND-Plan-v4 GIBp3