Delete "or showers" from the sentence "Newly installed aerators or flow restrictors added to private lavatories or showers must be WaterSense labeled.”
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© Copyright U.S. Green Building Council, Inc. All rights reserved.
Requirements
Further reduce fixture and fitting water use from the calculated baseline in WE Prerequisite Indoor Water Use Reduction. Additional potable water savings can be earned above the prerequisite level using alternative water sources. Include fixtures and fittings necessary to meet the needs of the occupants. Some of these fittings and fixtures may be outside the tenant space (for Commercial Interiors) or project boundary (for New Construction). Points are awarded according to Table 1.
Table 1. Points for reducing water use
Percentage reduction | Points (BD&C) | Points (Schools, Retail, Hospitality, Healthcare) | Points (ID&C) | Points (CI Retail) | Points (CI Hospitality) |
---|---|---|---|---|---|
25% | 1 | 1 | 2 | 2 | 2 |
30% | 2 | 2 | 4 | 4 | 4 |
35% | 3 | 3 | 6 | 6 | 6 |
40% | 4 | 4 | 8 | 8 | 8 |
45% | 5 | 5 | 10 | 10 | 10 |
50% | 6 | -- | 12 | -- | 11 |
AND
Appliance and process water
Install equipment within the project scope that meets the minimum requirements in Table 2, 3, 4, or 5 . One point is awarded for meeting all applicable requirements in any one table. All applicable equipment listed in each table must meet the standard. Retail projects can earn a second point for meeting the requirements of two tables.Table 2. Compliant commercial washing machines
To use Table 2, the project must process at least 120,000 lbs (57 606 kg) of laundry per year.Washing machine | Requirement (IP units) | Requirement (SI units) |
---|---|---|
On-premise, minimum capacity 2,400 lbs (10 886 kg) per 8-hour shift | Maximum 1.8 gals per pound * | Maximum 7 liters per 0.45 kilograms * |
Table 3. Standards for commercial kitchen equipment
To use Table 3, the project must serve at least 100 meals per day of operation. All process and appliance equipment listed in the category of kitchen equipment and present on the project must comply with the standards.Kitchen equipment | Requirement (IP units) | Requirement (SI units) | |
---|---|---|---|
Dishwasher |
Undercounter | ENERGY STAR | ENERGY STAR or performance equivalent |
Stationary, single tank, door | ENERGY STAR | ENERGY STAR or performance equivalent | |
Single tank, conveyor | ENERGY STAR | ENERGY STAR or performance equivalent | |
Multiple tank, conveyor | ENERGY STAR | ENERGY STAR or performance equivalent | |
Flight machine | ENERGY STAR | ENERGY STAR or performance equivalent | |
Food steamer |
Batch (no drain connection) | ≤ 2 gal/hour/pan including condensate cooling water | ≤ 7.5 liters/hour/pan including condensate cooling water |
Cook-to-order (with drain connection) | ≤ 5 gal/hour/pan including condensate cooling water | ≤ 19 liters/hour/pan including condensate cooling water | |
Combination oven, |
Countertop or stand | ≤ 1.5 gal/hour/panincluding condensate cooling water | ≤ 5.7 liters/hour/pan including condensate cooling water |
Roll-in | ≤ 1.5 gal/hour/pan including condensate cooling water | ≤ 5.7 liters/hour/pan including condensate cooling water | |
Food waste disposer |
Disposer | 3-8 gpm, full load condition; 10 minute automatic shutoff or 1 gpm, no-load condition | 11–30 lpm, full load condition; 10-min automatic shutoff or 3.8 lpm, no-load condition |
Scrap collector | Maximum 2 gpm makeup water | Maximum 7.6 lpm makeup water | |
Pulper | Maximum 2 gpm makeup water | Maximum 7.6 lpm makeup water | |
Strainer basket | No additional water usage | No additional water usage |
Table 4. Compliant laboratory and medical equipment
To use Table 4, the project must be a medical or laboratory facility.Lab equipment | Requirement (IP units) | Requirement (SI units) |
---|---|---|
Reverse-osmosis water purifier | 75% recovery | 75% recovery |
Steam sterilizer | For 60-inch sterilizer, 6.3 gal/U.S. tray For 48-inch sterilizer, 7.5 gal/U.S. tray |
For 1520-mm sterilizer, 28.5 liters/DIN tray For 1220-mm sterilizer, 28.35 liters/DIN tray |
Sterile process washer | 0.35 gal/U.S. tray | 1.3 liters/DIN tray |
X-ray processor, 150 mm or more in any dimension | Film processor water recycling unit | |
Digital imager, all sizes | No water use |
Table 5. Compliant municipal steam systems
To use Table 5, the project must be connected to a municipal or district steam system that does not allow the return of steam condensate.Steam system | Standard |
---|---|
Steam condensate disposal | Cool municipally supplied steam condensate (no return) to drainage system with heat recovery system or reclaimed water |
OR | |
Reclaim and use steam condensate | 100% recovery and reuse |
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 »Frequently asked questions
Our plumbing fixtures are served, in part, by nonpotable water. How do we account for this? The answer to this question is available to LEEDuser premium members. Start a free trial » (If you're already a premium member, log in here.) |
Addenda
Delete "or showers" from the sentence "Newly installed aerators or flow restrictors added to private lavatories or showers must be WaterSense labeled.”
In the related “International Water Labeling Programs” Guidance Document (http://www.usgbc.org/resources/international-water-labeling-programs), edit the note at the bottom of the document to read:
“Note: countries without a listed labeling program must meet the flush and flow requirements of “Table 6. Maximum installed flush or flow rates for prescriptive path” listed in the Step-by-Step Guidance section of the LEED Reference Guide.
“Projects served by water supply pressures different than specified in LEED v4 may install pressure compensating aerators in flow fixtures to achieve the desired flow rate without compromising user satisfaction.”
Under Step 4. Select High-Efficiency Appliances, add the following content after the sentence that begins "ENERGY STAR may not be readily available in all areas": "Existing appliances intended for reuse in the project are not required to meet the requirements in Table 2. Standards for appliances"
Under Step 5. Design Process Water Systems, add the following content after the sentence that begins "Where applicable, select and design appliances and equipment": "Existing equipment intended for reuse in the project is not required to meet the requirements in Table 3. Standards for processes."
BD+C reference guide, STEP-BY-STEP GUIDANCE section:
Under Step 4. Select High-Efficiency Appliances, add the following content after the sentence that begins "Select appliances that meet the labeling or performance requirements":
"Existing appliances intended for reuse in the project are not required to meet the requirements in Table 2. Standards for appliances"
Under Step 5. Design Process Water Systems, add the following content after the sentence that begins "Where applicable, select and design appliances and equipment": "Existing equipment intended for reuse in the project is not required to meet the requirements in Table 3. Standards for processes."
"Retail and Hospitality projects may earn additional points for selecting appliance or process water systems that meet the standards in the credit requirements."
• WE Indoor Water Use (credit): Exemplary Performance “yes”
• EA Prereq Fundamental Commissioning and Verification" “C” in the Design/Construction column
• MR Credit Long-Term Commitment: “D” in the Design/Construction column
• Innovation and Regional Priority sections: “D/C” in the Design/Construction column
WE Indoor Water use (credit): Exemplary Performance section: “Achieve 55% water use reduction.”
O+M reference guide: Revise the Group Approach section to read: "Eligible. The percentage reduction can be based on the total combined water use reduction in all LEED project buildings. The baseline adjustment for year of substantial system completion should be averaged based on all plumbing fixtures in all buildings. If nonpotable water systems will be shared by multiple projects, ensure adequate supply to meet the demands of all projects using nonpotable water. The nonpotable water may not be double-counted among projects. Submit separate documentation for each building, as required for WE Prerequisite Indoor Water Use Reduction. "
Change the last sentence to read: “A plumbing fixture schedule is acceptable, provided it contains the fixture manufacturer, model, flush or flow rate information, and the WaterSense designation where applicable.”
Add "treated seawater" to the list of acceptable alternative water sources, behind stormwater.
Added Neighborhood Development calculations
Can automated-maintenance urinals be considered "waterless" for the purposes of WE prerequisite and credit Indoor Water Use Reduction?
Yes, automated maintenance urinals with water use not to exceed 150 gallons (568 liters) annually can be considered as waterless urinals for the purposes of credit achievement calculations in LEED v4 WE prerequisite and credit Indoor Water Use Reduction. Do not include the volume of water used by these urinals in the LEED v4 Indoor Water Use Calculator (they can be excluded, or considered to have a water use of 0 gallons/liters). Projects must also submit manufacturer documentation showing the annual volume of water used by the urinals.
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© Copyright U.S. Green Building Council, Inc. All rights reserved.
Requirements
Further reduce fixture and fitting water use from the calculated baseline in WE Prerequisite Indoor Water Use Reduction. Additional potable water savings can be earned above the prerequisite level using alternative water sources. Include fixtures and fittings necessary to meet the needs of the occupants. Some of these fittings and fixtures may be outside the tenant space (for Commercial Interiors) or project boundary (for New Construction). Points are awarded according to Table 1.
Table 1. Points for reducing water use
Percentage reduction | Points (BD&C) | Points (Schools, Retail, Hospitality, Healthcare) | Points (ID&C) | Points (CI Retail) | Points (CI Hospitality) |
---|---|---|---|---|---|
25% | 1 | 1 | 2 | 2 | 2 |
30% | 2 | 2 | 4 | 4 | 4 |
35% | 3 | 3 | 6 | 6 | 6 |
40% | 4 | 4 | 8 | 8 | 8 |
45% | 5 | 5 | 10 | 10 | 10 |
50% | 6 | -- | 12 | -- | 11 |
AND
Appliance and process water
Install equipment within the project scope that meets the minimum requirements in Table 2, 3, 4, or 5 . One point is awarded for meeting all applicable requirements in any one table. All applicable equipment listed in each table must meet the standard. Retail projects can earn a second point for meeting the requirements of two tables.Table 2. Compliant commercial washing machines
To use Table 2, the project must process at least 120,000 lbs (57 606 kg) of laundry per year.Washing machine | Requirement (IP units) | Requirement (SI units) |
---|---|---|
On-premise, minimum capacity 2,400 lbs (10 886 kg) per 8-hour shift | Maximum 1.8 gals per pound * | Maximum 7 liters per 0.45 kilograms * |
Table 3. Standards for commercial kitchen equipment
To use Table 3, the project must serve at least 100 meals per day of operation. All process and appliance equipment listed in the category of kitchen equipment and present on the project must comply with the standards.Kitchen equipment | Requirement (IP units) | Requirement (SI units) | |
---|---|---|---|
Dishwasher |
Undercounter | ENERGY STAR | ENERGY STAR or performance equivalent |
Stationary, single tank, door | ENERGY STAR | ENERGY STAR or performance equivalent | |
Single tank, conveyor | ENERGY STAR | ENERGY STAR or performance equivalent | |
Multiple tank, conveyor | ENERGY STAR | ENERGY STAR or performance equivalent | |
Flight machine | ENERGY STAR | ENERGY STAR or performance equivalent | |
Food steamer |
Batch (no drain connection) | ≤ 2 gal/hour/pan including condensate cooling water | ≤ 7.5 liters/hour/pan including condensate cooling water |
Cook-to-order (with drain connection) | ≤ 5 gal/hour/pan including condensate cooling water | ≤ 19 liters/hour/pan including condensate cooling water | |
Combination oven, |
Countertop or stand | ≤ 1.5 gal/hour/panincluding condensate cooling water | ≤ 5.7 liters/hour/pan including condensate cooling water |
Roll-in | ≤ 1.5 gal/hour/pan including condensate cooling water | ≤ 5.7 liters/hour/pan including condensate cooling water | |
Food waste disposer |
Disposer | 3-8 gpm, full load condition; 10 minute automatic shutoff or 1 gpm, no-load condition | 11–30 lpm, full load condition; 10-min automatic shutoff or 3.8 lpm, no-load condition |
Scrap collector | Maximum 2 gpm makeup water | Maximum 7.6 lpm makeup water | |
Pulper | Maximum 2 gpm makeup water | Maximum 7.6 lpm makeup water | |
Strainer basket | No additional water usage | No additional water usage |
Table 4. Compliant laboratory and medical equipment
To use Table 4, the project must be a medical or laboratory facility.Lab equipment | Requirement (IP units) | Requirement (SI units) |
---|---|---|
Reverse-osmosis water purifier | 75% recovery | 75% recovery |
Steam sterilizer | For 60-inch sterilizer, 6.3 gal/U.S. tray For 48-inch sterilizer, 7.5 gal/U.S. tray |
For 1520-mm sterilizer, 28.5 liters/DIN tray For 1220-mm sterilizer, 28.35 liters/DIN tray |
Sterile process washer | 0.35 gal/U.S. tray | 1.3 liters/DIN tray |
X-ray processor, 150 mm or more in any dimension | Film processor water recycling unit | |
Digital imager, all sizes | No water use |
Table 5. Compliant municipal steam systems
To use Table 5, the project must be connected to a municipal or district steam system that does not allow the return of steam condensate.Steam system | Standard |
---|---|
Steam condensate disposal | Cool municipally supplied steam condensate (no return) to drainage system with heat recovery system or reclaimed water |
OR | |
Reclaim and use steam condensate | 100% recovery and reuse |
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 »In the end, LEED is all about documentation. LEEDuser’s Documentation Toolkit, for premium members only, saves you time and helps you avoid mistakes with:
- Calculators to help assess credit compliance.
- Tracking spreadsheets for materials purchases.
- Spreadsheets and forms to give to subs and other team members.
- Guidance documents on arcane LEED issues.
- Sample templates to help guide your narratives and LEED Online submissions.
- Examples of actual submissions from certified LEED projects.
Our plumbing fixtures are served, in part, by nonpotable water. How do we account for this? The answer to this question is available to LEEDuser premium members. Start a free trial » (If you're already a premium member, log in here.) |
Delete "or showers" from the sentence "Newly installed aerators or flow restrictors added to private lavatories or showers must be WaterSense labeled.”
In the related “International Water Labeling Programs” Guidance Document (http://www.usgbc.org/resources/international-water-labeling-programs), edit the note at the bottom of the document to read:
“Note: countries without a listed labeling program must meet the flush and flow requirements of “Table 6. Maximum installed flush or flow rates for prescriptive path” listed in the Step-by-Step Guidance section of the LEED Reference Guide.
“Projects served by water supply pressures different than specified in LEED v4 may install pressure compensating aerators in flow fixtures to achieve the desired flow rate without compromising user satisfaction.”
Under Step 4. Select High-Efficiency Appliances, add the following content after the sentence that begins "ENERGY STAR may not be readily available in all areas": "Existing appliances intended for reuse in the project are not required to meet the requirements in Table 2. Standards for appliances"
Under Step 5. Design Process Water Systems, add the following content after the sentence that begins "Where applicable, select and design appliances and equipment": "Existing equipment intended for reuse in the project is not required to meet the requirements in Table 3. Standards for processes."
BD+C reference guide, STEP-BY-STEP GUIDANCE section:
Under Step 4. Select High-Efficiency Appliances, add the following content after the sentence that begins "Select appliances that meet the labeling or performance requirements":
"Existing appliances intended for reuse in the project are not required to meet the requirements in Table 2. Standards for appliances"
Under Step 5. Design Process Water Systems, add the following content after the sentence that begins "Where applicable, select and design appliances and equipment": "Existing equipment intended for reuse in the project is not required to meet the requirements in Table 3. Standards for processes."
"Retail and Hospitality projects may earn additional points for selecting appliance or process water systems that meet the standards in the credit requirements."
• WE Indoor Water Use (credit): Exemplary Performance “yes”
• EA Prereq Fundamental Commissioning and Verification" “C” in the Design/Construction column
• MR Credit Long-Term Commitment: “D” in the Design/Construction column
• Innovation and Regional Priority sections: “D/C” in the Design/Construction column
WE Indoor Water use (credit): Exemplary Performance section: “Achieve 55% water use reduction.”
O+M reference guide: Revise the Group Approach section to read: "Eligible. The percentage reduction can be based on the total combined water use reduction in all LEED project buildings. The baseline adjustment for year of substantial system completion should be averaged based on all plumbing fixtures in all buildings. If nonpotable water systems will be shared by multiple projects, ensure adequate supply to meet the demands of all projects using nonpotable water. The nonpotable water may not be double-counted among projects. Submit separate documentation for each building, as required for WE Prerequisite Indoor Water Use Reduction. "
Change the last sentence to read: “A plumbing fixture schedule is acceptable, provided it contains the fixture manufacturer, model, flush or flow rate information, and the WaterSense designation where applicable.”
Add "treated seawater" to the list of acceptable alternative water sources, behind stormwater.
Added Neighborhood Development calculations
Can automated-maintenance urinals be considered "waterless" for the purposes of WE prerequisite and credit Indoor Water Use Reduction?
Yes, automated maintenance urinals with water use not to exceed 150 gallons (568 liters) annually can be considered as waterless urinals for the purposes of credit achievement calculations in LEED v4 WE prerequisite and credit Indoor Water Use Reduction. Do not include the volume of water used by these urinals in the LEED v4 Indoor Water Use Calculator (they can be excluded, or considered to have a water use of 0 gallons/liters). Projects must also submit manufacturer documentation showing the annual volume of water used by the urinals.