LEED GA STUDY GROUP:WATER EFFECIENCY

LEED NEW CONSTRUCTION CHECKLIST

WATER EFFICIENCY

LEED NEW CONSTRUCTION CHECKLIST

SUSTAINABLE SITES

Prerequisite 1: Water Use Reduction - 20% Reduction

LEED NEW CONSTRUCTION CHECKLIST

SUSTAINABLE SITES

Prerequisite 1: Water Use Reduction - 20% Reduction

Potential Technologies & Strategies WaterSense certified fixtures and fixture fittings High-efficiency fixtures (e.g., water closets and urinals) Dry fixtures, such as toilets attached to composting systems Alternative on-site sources of water (rainwater, stormwater, & AC condensate) and graywater for uses such as custodial needs, toilet & urinal flushing *The quality of any alternative source of water used must be taken into consideration based on its application or use.

LEED NEW CONSTRUCTION CHECKLIST

SUSTAINABLE SITES

Credit 1: Water Efficient Landscaping (2-4pts)

Intent: To limit or eliminate the use of potable water or other natural surface or subsurface water resources available on

or near the project site for landscape irrigation.

LEED NEW CONSTRUCTION CHECKLIST

SUSTAINABLE SITES

Credit 1: Water Efficient Landscaping (2-4pts)

REQUIREMENTS:OPTION 1. Reduce by 50% (2 points)Reduce potable water consumption for irrigation by 50% from a calculated midsummer baseline case.Reductions must be attributed to any combination of the following items:

Plant species, density and microclimate factor Irrigation efficiency

Use of captured rainwater Use of recycled wastewater

Use of reclaimed water

LEED NEW CONSTRUCTION CHECKLIST

SUSTAINABLE SITES

Credit 1: Water Efficient Landscaping (2-4pts)

OPTION 2. No Potable Water Use or Irrigation (4 points)Meet the requirements for Option 1 ANDPATH 1Use only captured rainwater, recycled wastewater, recycled graywater or water treated and conveyed by a public agency specifically for nonpotable uses for irrigation (reclaimed water).ORPATH 2Install landscaping that does not require permanent irrigation systems. Temporary irrigation systems used for plant establishment are allowed only if removed within 1 year of installation.

*If the percent reduction of potable water is 100% AND the percent reduction of total water is equal to or greater than 50%, both Option 1 and Option 2 are earned.

LEED NEW CONSTRUCTION CHECKLIST

SUSTAINABLE SITES

Credit 2: Innovative Waste Water Technologies (2pts)

Intent: To reduce wastewater generation and potable water demand while increasing the local aquifer recharge.

LEED NEW CONSTRUCTION CHECKLIST

SUSTAINABLE SITES

Credit 2: Innovative Waste Water Technologies (2pts)

RequirementsOPTION 1Reduce potable water use for building sewage conveyance by 50% through the use of water-conserving fixtures (e.g., water closets, urinals) or nonpotable water (e.g., captured rainwater, recycled graywater, on-site or municipally treated wastewater).OROPTION 2Treat 50% of wastewater on-site to tertiary standards. Treated water must be infiltrated or used on-site.

LEED NEW CONSTRUCTION CHECKLIST

SUSTAINABLE SITES

Credit 3: Water Use Reduction (2-4pts)

Intent: To further increase water efficiency within buildings to reduce the burden on municipal water supply and wastewatersystems.

LEED NEW CONSTRUCTION CHECKLIST

SUSTAINABLE SITES

Credit 3: Water Use Reduction (2-4pts)

Use less water than baseline:

30% = 2 points

35% = 3 points

40% = 4 points

45% = 1 E.P. point