Remove the following text:OROPTION 2. Nonpotable Water Source Use (1 point)Replace with:AND/ORWE Credit 4.2 (1 point): Nonpotable Water Source Use
EBOM-2009 WEc4: Cooling Tower Water Management
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Credit language
© Copyright U.S. Green Building Council, Inc. All rights reserved.
Requirements
WE credit 4.1 (1 point): Chemical management
Develop and implement a water management plan for the cooling tower or evaporative condenser that addresses chemical treatment, bleed-off, biological control and staff training as it relates to cooling tower maintenance. Improve water efficiency by installing and/or maintaining a conductivity meter and automatic controls to adjust the bleed rate and maintain proper concentration at all times.AND/OR
WE credit 4.2 (1 point): Nonpotable water source use
Use makeup water that consists of at least 50% nonpotable water, such as harvested rainwater, harvested stormwater, air-conditioner condensate, swimming pool filter backwash water, cooling tower blowdown, pass-through (once-through) cooling water, recycled treated wastewater from toilet and urinal flushing, foundation drain water, municipally reclaimed water or any other appropriate on-site water source that is not naturally occurring groundwater or surface water. Have a measurement program in place that verifies makeup water quantities used from nonpotable sources. Meters must be calibrated within the manufacturer’s recommended interval if the building owner, management organization or tenant owns the meter. Meters owned by third parties (e.g., utilities or governments) are exempt. See all forum discussions about this credit »What does it cost?
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Addenda
OROPTION 3. (2 points)Achieve both Options 1 and 2.
Remove the following text:OPTION 1. Chemical Management (1 point)Replace with:WE Credit 4.1 (1 point): Chemical Management
In the third line of the third paragraph, replace "WE Credit 4, Option 2, Nonpotable Water Source Use" with "WE Credit 4.2 Cooling Tower Water Management - Nonpotable Water Source Use"
Delete the Alternative Compliance Path for Projects Outside the U.S. box.
In the last line of the first paragraph, replace "WE Credit 4, Option 2, Nonpotable Water Source Use" with "WE Credit 4.2 Cooling Tower Water Management - Nonpotable Water Source Use"
Replace all instances of "WE Credit 4" and "Credit 4" with "WE Credits 4.1 - 4.2" and "Credits 4.1 - 4.2" respectively
OROPTION 3. (2 points)Achieve both Options 1 and 2.
Remove the following text:OPTION 1. Chemical Management (1 point)Replace with:WE Credit 4.1 (1 point): Chemical Management
Add "or evaporative condenser" after "cooling tower" in the first sentence.
Remove the following text:OROPTION 2. Nonpotable Water Source Use (1 point)Replace with:AND/ORWE Credit 4.2 (1 point): Nonpotable Water Source Use
In the first line of the third paragraph, replace "WE Credit 4, Option 1, Chemical Management" with "WE Credit 4.1 Cooling Tower Water Management - Chemical Management"
Add "or evaporative condenser" after "cooling tower"
LEEDuser overview
Frank advice from LEED experts
LEED is changing all the time, and every project is unique. Even seasoned professionals can miss a critical detail and lose a credit or even a prerequisite at the last minute. Our expert advice guides our LEEDuser Premium members and saves you valuable time.
For full access, sign up now for LEEDuser Premium
Already a premium member? Log in now
Credit language
© Copyright U.S. Green Building Council, Inc. All rights reserved.
Requirements
WE credit 4.1 (1 point): Chemical management
Develop and implement a water management plan for the cooling tower or evaporative condenser that addresses chemical treatment, bleed-off, biological control and staff training as it relates to cooling tower maintenance. Improve water efficiency by installing and/or maintaining a conductivity meter and automatic controls to adjust the bleed rate and maintain proper concentration at all times.AND/OR
WE credit 4.2 (1 point): Nonpotable water source use
Use makeup water that consists of at least 50% nonpotable water, such as harvested rainwater, harvested stormwater, air-conditioner condensate, swimming pool filter backwash water, cooling tower blowdown, pass-through (once-through) cooling water, recycled treated wastewater from toilet and urinal flushing, foundation drain water, municipally reclaimed water or any other appropriate on-site water source that is not naturally occurring groundwater or surface water. Have a measurement program in place that verifies makeup water quantities used from nonpotable sources. Meters must be calibrated within the manufacturer’s recommended interval if the building owner, management organization or tenant owns the meter. Meters owned by third parties (e.g., utilities or governments) are exempt. See all forum discussions about this credit »Checklists
Step by step to LEED certification
LEEDuser’s checklists walk you through the key action steps you need to earn a credit, including how to avoid common pitfalls and save money.
For full access, sign up now for LEEDuser Premium
Already a premium member? Log in now
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.
For full access, sign up now for LEEDuser Premium
Already a premium member? Log in now
Addenda
Remove the following text:OROPTION 2. Nonpotable Water Source Use (1 point)Replace with:AND/ORWE Credit 4.2 (1 point): Nonpotable Water Source Use
OROPTION 3. (2 points)Achieve both Options 1 and 2.
Remove the following text:OPTION 1. Chemical Management (1 point)Replace with:WE Credit 4.1 (1 point): Chemical Management
In the third line of the third paragraph, replace "WE Credit 4, Option 2, Nonpotable Water Source Use" with "WE Credit 4.2 Cooling Tower Water Management - Nonpotable Water Source Use"
Delete the Alternative Compliance Path for Projects Outside the U.S. box.
In the last line of the first paragraph, replace "WE Credit 4, Option 2, Nonpotable Water Source Use" with "WE Credit 4.2 Cooling Tower Water Management - Nonpotable Water Source Use"
Replace all instances of "WE Credit 4" and "Credit 4" with "WE Credits 4.1 - 4.2" and "Credits 4.1 - 4.2" respectively
OROPTION 3. (2 points)Achieve both Options 1 and 2.
Remove the following text:OPTION 1. Chemical Management (1 point)Replace with:WE Credit 4.1 (1 point): Chemical Management
Add "or evaporative condenser" after "cooling tower" in the first sentence.
Remove the following text:OROPTION 2. Nonpotable Water Source Use (1 point)Replace with:AND/ORWE Credit 4.2 (1 point): Nonpotable Water Source Use
In the first line of the third paragraph, replace "WE Credit 4, Option 1, Chemical Management" with "WE Credit 4.1 Cooling Tower Water Management - Chemical Management"
Add "or evaporative condenser" after "cooling tower"