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LEED v2009
Healthcare
Water Efficiency
Water use reduction

LEED CREDIT

Healthcare-v2009 WEc3: Water Use Reduction 1-3 points

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Requirements

Project teams earn points by achieving the following percent reductions for both building water use and process water use. The minimum water savings percentage for each point threshold is as follows:

Percentage Reduction

Points

30%

1

35%

2

40%

3

Building water use
Employ strategies that in aggregate use less water than the water use baseline calculated for the building (not including irrigation). The baseline shall meet the requirements of the Energy Policy Act (EPAct) of 1992 and subsequent rulings by the Department of Energy, requirements of the EPAct of 2005, and the plumbing code requirements as stated in the 2006 editions of the Uniform Plumbing Code or International Plumbing Code pertaining to fixture performance. Calculations are based on estimated occupant usage and must include only the following fixtures and fixture fittings (as applicable to the project scope): water closets, urinals, lavatory faucets, showers, kitchen sink faucets and pre-rinse spray valves. Fixtures used for clinical use, such as surgical scrub sinks and exam room sinks are exempt from this calculation. [Europe ACP: Water Use Baseline]
Table 1: National efficiency baselines for commercial and residential water-using fixtures, fittings and appliances

Fixtures, Fittings, and Appliances

Current Baseline (Imperial Units)

Current Baseline (Metric Units)

Toilets

1.6 gallons per flush (gpf)*

6 liters per flush (lpf)

Urinals

1.0 (gpf)

4.0 lpf

Lavatory (restroom) faucets

2.2 gallons per minute (gpm) at 60 pounds per square inch (psi), private applications only
(e.g., hospital patient rooms)
0.5 (gpm) at 60 (psi)** all others except private applications
0.25 gallons per cycle for metering faucets

8.5 liters per minute (lpm) at 4 bar (58 psi), private applications only (e.g., hospital patient rooms)
2.0 lpm at 4 bar (58 psi), all others except private applications
1 liter per cycle for metering faucets

Pre-rinse spray valves
(for food service applications)

Flow rate ≤ 1.6 (gpm)

Flow rate ≤ 6 liters per minute (lpm)

Showerheads

2.5 gpm at 80 psi per shower stall****

9.5 lpm at 5.5 bar (80 psi) per shower stall

*        EPAct 1992 standard for toilets applies to both commercial and residential models.
**      In addition to EPAct requirements, the American Society of Mechanical Engineers standard for public lavatory faucets is 0.5 gpm at 60 psi (2.0 lpm at 4 bar (58 psi)) (ASME A112.18.1-2005). This maximum has been incorporated into the national Uniform Plumbing Code and the International Plumbing Code.
***    EPAct 1992 standard for toilets applies to both commercial and residential models.
****  Residential shower compartment (stall) in dwelling units: The total allowable flow rate from all flowing showerheads at any given time, including rain systems, waterfalls, bodysprays, bodyspas and jets, must be limited to the allowable showerhead flow rate as specified above (2.5 gpm/9.5 lpm) per shower compartment, where the floor area of the shower compartment is less than 2,500 square inches (1.5 square meters). For each increment of 2,500 square inches (1.5 square meters) of floor area thereafter or part thereof, an additional showerhead with total allowable flow rate from all flowing devices equal to or less than the allowable flow rate as specified above must be allowed. Exception: Showers that emit recirculated nonpotable water originating from within the shower compartment while operating are allowed to exceed the maximum as long as the total potable water flow does not exceed the flow rate as specified above.

AND
Process water use
Employ strategies that in aggregate use less water than the process water use baseline calculated for equipment performance requirements as listed in Table 2. Calculations are based on estimated occupant usage and shall include only the following fixtures (as applicable to the project scope): clothes washers, dishwashers, ice machines, food steamers and combination ovens. Exemptions from calculations:
  • Appliances and equipment for which water is used toward human consumption may be excluded. For example, bread misters, soda machines, coffee making machines, misters for produce and fixtures used to fill sinks for washing produce.
  • Fixtures whose flow rates are regulated by health codes may be excluded from the calculation. For example, regulated medical equipment is excluded. See WE Prerequisite 2 for requirements applicable to heat rejecting medical equipment.
For applicable equipment not addressed in Tables 1 or 2, additional equipment performance baseline requirements may be proposed, provided that documentation supporting the proposed benchmark or industry standard is provided.
Table 2: Equipment performance requirements table

Equipment

Baseline (Imperial Units)

Baseline (Metric Units)

Commercial Clothes Washer – less than 80 lbs (36.3 kg)

9 gallon/CF/cycle

1,200 liters/m3/cycle

Commercial Dishwashers

Undercounter – high temp

1.98 gallon/rack

7.50 liters/rack

Undercounter – low temp

1.95 gallon/rack

7.38 liters/rack

Door type – high temp

1.44 gallon/rack

5.45 liters/rack

Door type – low temp

1.85 gallon/rack

7.00 liters/rack

Single tank rack conveyor – high temp

1.13 gallon/rack

4.28 liters/rack

Single tank rack conveyor – low temp

1.23 gallon/rack

4.66 liters/rack

Multi-tank rack conveyor – high temp

1.1 gallon/rack

4.16 liters/rack

Multi-tank rack conveyor – low temp

0.99 gallon/rack

3.75 liters/rack

Flight type

180 gallon/hour

681 liters/hour

Commercial Ice Machines

Water-cooled ice machine capacity < 450 lb/day (<204.11 kg/day)

<25 gal/100 lb ice

<95 liters/46 kg ice

Air-cooled ice machine capacity > 450 lb/day (>204.11 kg/day)

<25 gal/100 lb ice

<95 liters/46 kg ice

Air-cooled ice machine with remote condensing unit (w/o remote compressor) capacity < 1000 lb/day (<453.59 kg/day)

<25 gal/100 lb ice

<95 liters/46 kg ice

Air-cooled ice machine with remote condensing unit (w/o remote compressor) capacity > 1000 lb/day (>453.59 kg/day)

<25 gal/100 lb ice

<95 liters/46 kg ice

Air-cooled ice machine with remote condensing unit (with remote compressor) capacity < 934 lb/day (<423.66 kg/day)

<25 gal/100 lb ice

<95 liters/46 kg ice

Air-cooled ice machine with remote condensing unit (with remote compressor) capacity > 934 lb/day (>423.66 kg/day)

<25 gal/100 lb ice

<95 liters/46 kg ice

Air-cooled ice machine Self Contained Unit (SCU)

<25 gal/100 lb ice

<95 liters/46 kg ice

Water-cooled ice machines

Must be on closed cooling loop

Must be on closed cooling loop

Water-cooled ice machines once through cooling

Not allowed

Not allowed

Food Steamers

Boiler type steam cooker – batch cooking

8 gallon/hour/pan

30.28 liters/hour/pan

Boilerless type steam cooker – high production/cook to order

8 gallon/hour/pan

30.28 liters/hour/pan

Combination Oven

40 gph

151.42 lph

Countertop or stand mounted

40 gph

151.42 lph

Roll-in

60 gph

227.12 lph

Other equipment

Performance baseline based on industry standards

Alternative Compliance Paths (ACPs)

Europe ACP: Water Use Baseline
Projects in Europe may use the values defined by European Standards. See all forum discussions about this credit »

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Cost estimates for this credit

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Addenda

1/27/2017Updated: 1/27/2017
Form Update
Description of change:
corrected ice machine baseline numbers for retail on process water and instructions tabs (v07)
Campus Applicable
No
Internationally Applicable:
No
10/1/2012Updated: 2/14/2015
Global ACP
Description of change:
Add a third column to the table, reading as follows: Current Baseline (Metric Units) 6 liters per flush (lpf) 4.0 lpf 8.5 liters per minute (lpm) at 4 bar (58 psi), private applications only (e.g., hospital patient rooms) 2.0 lpm at 4 bar (58 psi), all others except private applications 1 liter per cycle for metering faucets Flow rate = 6 liters per minute (lpm) 9.5 lpm at 5.5 bar (80 psi) per shower stall
Campus Applicable
No
Internationally Applicable:
Yes
10/1/2014Updated: 2/14/2015
Reference Guide Correction
Description of change:
Private or private use applies to plumbing fixtures in residences, apartments, and dormitories; private (non-public) bathrooms in transient lodging facilities (hotels and motels); and private bathrooms [and patient rooms] within hospitals and nursing facilities.

Add the following to eligible fixtures section:

"For healthcare projects, fixtures used for clinical use related to medical procedures, such as surgical scrub sinks and exam rooms sinks, in hospitals and medical office buildings are excluded from the water use calculations. Medication room sinks, utility room sinks, and other exam/procedure/observation room sinks for clinical use are also excluded. Should exam/procedure/observation room sinks be used primarily for hand-washing, they may be included in the water use calculations at the project team’s discretion under the public lavatory category. If included, project teams should provide a narrative explaining the usage assumptions for these sinks.

Lavatories in hospital inpatient bathrooms and inpatient rooms are considered private. The inpatient lavatory and water closet should use the default residential usage assumptions (of five times per day per residential occupant), unless specific project conditions warrant an alternative. Lavatories in hospital inpatient rooms (outside the bathrooms) are considered private if used by patients and/or staff similarly to a residential lavatory, or can be exempt if they are used by staff primarily for medical or clinical use.

Nutrition station (pantry) sinks and hospital staff lounge sinks should be included in the water use calculations under the kitchen sink category."
Campus Applicable
No
Internationally Applicable:
Yes
5/9/2011Updated: 2/14/2015
Reference Guide Correction
Description of change:
(1) In the "Calculating Occupancy" section, add "e. Part-time students" (2) In the paragraph immediately below that, before the last sentence, add "Part-time students are calculated in the same manner as part-time staff."
Campus Applicable
No
Internationally Applicable:
No
10/1/2013Updated: 2/14/2015
Rating System Correction
Description of change:
Add showers and kitchen sinks to the list of fixtures:
"Calculations are based on estimated occupant usage and must include only the following fixtures and fixture fittings (as applicable to the project scope): water closets, urinals, lavatory faucets, showers, kitchen sink faucets and pre-rinse spray valves. Fixtures used for clinical use, such as surgical scrub sinks and exam room sinks are exempt from this calculation."
Campus Applicable
No
Internationally Applicable:
Yes
7/1/2014Updated: 2/14/2015
Form Update
Description of change:
Corrected errors from previous version, including incorrect uses per day calculation. Added override functions for special circumstances. Modified built-in dual flush calculator. Added functionality for custom naming of tabs. Streamlined output fields. Added content for BD+C, ID+C, and Retail/Healthcare project types.
Campus Applicable
Yes
Internationally Applicable:
Yes
8/1/2011Updated: 2/14/2015
Reference Guide Correction
Description of change:
See revised image
Campus Applicable
No
Internationally Applicable:
No
4/2/2014Updated: 2/14/2015
Rating System Correction
Description of change:
Correct metric conversion of commercial clothes washers 34 liters/cf/cycle to 1,200 liters/m3/cycle
Campus Applicable
No
Internationally Applicable:
Yes
10/1/2012Updated: 2/14/2015
Global ACP
Description of change:
Add "Imperial Units" after "Current Baseline" in the second column
Campus Applicable
No
Internationally Applicable:
Yes
11/1/2011Updated: 2/14/2015
Reference Guide Correction
Description of change:
Replace first table of the section
Campus Applicable
No
Internationally Applicable:
No
10/1/2012Updated: 2/14/2015
Global ACP
Description of change:
Add a third column to the table, reading as follows: Current Baseline (Metric Units) 6 liters per flush (lpf) 4.0 lpf 8.5 liters per minute (lpm) at 4 bar (58 psi), private applications only (e.g., hospital patient rooms) 2.0 lpm at 4 bar (58 psi), all others except private applications 1 liter per cycle for metering faucets Flow rate = 6 liters per minute (lpm) 9.5 lpm at 5.5 bar (80 psi) per shower stall
Campus Applicable
No
Internationally Applicable:
Yes
4/2/2014Updated: 2/14/2015
Reference Guide Correction
Description of change:
Add a third column to the table under 'Commercial Process Water Use' with metric unit conversions, titled: ‘Baseline (Metric Units).’
Please reference specific prerequisites and credit in the Credit Library for a complete table.
Campus Applicable
No
Internationally Applicable:
Yes
5/9/2011Updated: 2/14/2015
Reference Guide Correction
Description of change:
After the section\'s first paragraph, insert the following:For additions to existing buildings, only the fixtures within the project scope must be counted for the prerequisite. To earn points under WE credit 3, all fixtures necessary to meet the needs of the addition occupants must be included, even if they are located within the existing building.
Campus Applicable
No
Internationally Applicable:
No
11/1/2011Updated: 2/14/2015
Rating System Correction
Description of change:
Replace first table of the section
Campus Applicable
No
Internationally Applicable:
No
5/9/2011Updated: 2/14/2015
Reference Guide Correction
Description of change:
Remove the paragraph beginning with, "Although water-efficient dishwashers..."
Campus Applicable
No
Internationally Applicable:
No
10/1/2013Updated: 2/14/2015
Rating System Correction
Description of change:
Add showers and kitchen sinks to the list of fixtures:
"Calculations are based on estimated occupant usage and must include only the following fixtures and fixture fittings (as applicable to the project scope): water closets, urinals, lavatory faucets, showers, kitchen sink faucets and pre-rinse spray valves. Fixtures used for clinical use, such as surgical scrub sinks and exam room sinks are exempt from this calculation."
Campus Applicable
No
Internationally Applicable:
Yes
4/1/2012Updated: 2/14/2015
Reference Guide Correction
Description of change:
In alphabetical order, add the following definition for autocontrol faucets, "Autocontrol faucets have automatic fixture sensors or metering controls."
Campus Applicable
No
Internationally Applicable:
No
10/1/2012Updated: 2/14/2015
Global ACP
Description of change:
Add "Imperial Units" after "Current Baseline" in the second column
Campus Applicable
No
Internationally Applicable:
Yes
11/1/2011Updated: 2/14/2015
Reference Guide Correction
Description of change:
Replace first table of the section
Campus Applicable
No
Internationally Applicable:
No
7/1/2012
LEED Interpretation
Inquiry:

Can municipally supplied treated seawater for toilet flushing be used as a strategy for earning WEp1 and WEc1 Water Use Reduction?

Ruling:

Update October 20, 2016: See the updated “Water Use Reduction Additional Guidance” document for new guidance on applying seawater or municipal wastewater to v2009 Water Efficiency credits.

Update October 1, 2013
Note that LEED Interpretation 10117 has been updated to clarify that seawater must be treated to appropriate levels for non-potable uses in order to apply to WEc2 Innovative Wastewater Technologies; seawater that is treated to potable drinking water standards would not apply. Any on-site energy use to desalinate the seawater must be included in the EAp2/c1 calculations. Refer to the guidance document. Applicability of Seawater in Water Efficiency credits also updated.

10/1/13 notes: link resource and edit ruling: http://www.usgbc.org/resources/seawater-guidance

No, municipally supplied sources of non-potable water, including seawater, are not applicable to the WE fixture water use reduction credits, including WEp1 (D+C, EBOM) and WEc1 (CI) Water Use Reduction, or considered graywater. As stated in LI 1551 (12/12/2006) This credit focuses on fixture efficiency and on-site water reuse. In addition, the Water Use Reduction Additional Guidance document (updated 8/16/2010, http://www.usgbc.org/ShowFile.aspx?DocumentID=6493), confirms that the focus of the prerequisite is water efficiency of the installed fixtures, regardless of the water source, and only on-site water reuse is available as an alternative compliance path.

However, municipally treated wastewater (including treated seawater) applies to SSc1 - Path 9 Innovative Wastewater Technologies (CI), WEc2, Innovative Wastewater Technologies (BD+C), and can be used if the two conditions of LEED Interpretation 10117 are met: 1) the seawater is municipally supplied or explicitly approved by the municipality and 2) meets all applicable codes and permitting requirements, so as not to contaminate the municipal wastewater system with high salinity. For EBOM projects, where no wastewater credit is available, the project may apply for innovation credit for use of this strategy.

**Update October 1, 2013: Note that LEED Interpretation 10117 has been updated to clarify that seawater must be treated to appropriate levels for non-potable uses in order to apply to WEc2 Innovative Wastewater Technologies; seawater that is treated to potable drinking water standards would not apply. Any on-site energy use to desalinate the seawater must be included in the EAp2/c1 calculations. Refer to the guidance document. Applicability of Seawater in Water Efficiency credits also updated.

Original ruling July 1, 2012
No, municipally supplied sources of non-potable water, including seawater, are not applicable to the WE fixture water use reduction credits, including WEp1 (D+C, EBOM) and WEc1 (CI) Water Use Reduction, or considered graywater. As stated in LI 1551 (12/12/2006) This credit focuses on fixture efficiency and on-site water reuse. In addition, the Water Use Reduction Additional Guidance document (updated 8/16/2010, http://www.usgbc.org/ShowFile.aspx?DocumentID=6493), confirms that the focus of the prerequisite is water efficiency of the installed fixtures, regardless of the water source, and only on-site water reuse is available as an alternative compliance path.
However, municipally treated wastewater (including treated seawater) applies to SSc1 - Path 9 Innovative Wastewater Technologies (CI), WEc2, Innovative Wastewater Technologies (BD+C), and can be used if the two conditions of LEED Interpretation 10117 are met: 1) the seawater is municipally supplied or explicitly approved by the municipality and 2) meets all applicable codes and permitting requirements, so as not to contaminate the municipal wastewater system with high salinity. For EBOM projects, where no wastewater credit is available, the project may apply for innovation credit for use of this strategy."

Campus Applicable
No
Internationally Applicable:
No
7/1/2012
LEED Interpretation
Inquiry:

Can municipally supplied treated seawater for toilet flushing be used as a strategy for earning WEp1 and WEc1 Water Use Reduction?

Ruling:

Update October 20, 2016: See the updated “Water Use Reduction Additional Guidance” document for new guidance on applying seawater or municipal wastewater to v2009 Water Efficiency credits.

Update October 1, 2013
Note that LEED Interpretation 10117 has been updated to clarify that seawater must be treated to appropriate levels for non-potable uses in order to apply to WEc2 Innovative Wastewater Technologies; seawater that is treated to potable drinking water standards would not apply. Any on-site energy use to desalinate the seawater must be included in the EAp2/c1 calculations. Refer to the guidance document. Applicability of Seawater in Water Efficiency credits also updated.

Original ruling July 1, 2012
No, municipally supplied sources of non-potable water, including seawater, are not applicable to the WE fixture water use reduction credits, including WEp1 (D+C, EBOM) and WEc1 (CI) Water Use Reduction, or considered graywater. As stated in LI 1551 (12/12/2006) This credit focuses on fixture efficiency and on-site water reuse. In addition, the Water Use Reduction Additional Guidance document (updated 8/16/2010, http://www.usgbc.org/ShowFile.aspx?DocumentID=6493), confirms that the focus of the pre-requisite is water efficiency of the installed fixtures, regardless of the water source, and only on-site water reuse is available as an alternative compliance path.
However, municipally treated wastewater (including treated seawater) applies to SSc1 - Path 9 Innovative Wastewater Technologies (CI), WEc2, Innovative Wastewater Technologies (BD+C), and can be used if the two conditions of LEED Interpretation 10117 are met: 1) the seawater is municipally supplied or explicitly approved by the municipality and 2) meets all applicable codes and permitting requirements, so as not to contaminate the municipal wastewater system with high salinity. For EBOM projects, where no wastewater credit is available, the project may apply for innovation credit for use of this strategy."

----------
10/1/13 notes: revise ruling and update resource: http://www.usgbc.org/resources/seawater-guidance

No, municipally supplied sources of non-potable water, including seawater, are not applicable to the WE fixture water use reduction credits, including WEp1 (D+C, EBOM) and WEc1 (CI) Water Use Reduction, or considered graywater. As stated in LI 1551 (12/12/2006) This credit focuses on fixture efficiency and on-site water reuse. In addition, the Water Use Reduction Additional Guidance document (updated 8/16/2010, http://www.usgbc.org/ShowFile.aspx?DocumentID=6493), confirms that the focus of the prerequisite is water efficiency of the installed fixtures, regardless of the water source, and only on-site water reuse is available as an alternative compliance path.

However, municipally treated wastewater (including treated seawater) applies to SSc1 - Path 9 Innovative Wastewater Technologies (CI), WEc2, Innovative Wastewater Technologies (BD+C), and can be used if the two conditions of LEED Interpretation 10117 are met: 1) the seawater is municipally supplied or explicitly approved by the municipality and 2) meets all applicable codes and permitting requirements, so as not to contaminate the municipal wastewater system with high salinity. For EBOM projects, where no wastewater credit is available, the project may apply for innovation credit for use of this strategy.

**Update October 1, 2013: Note that LEED Interpretation 10117 has been updated to clarify that seawater must be treated to appropriate levels for non-potable uses in order to apply to WEc2 Innovative Wastewater Technologies; seawater that is treated to potable drinking water standards would not apply. Any on-site energy use to desalinate the seawater must be included in the EAp2/c1 calculations. Refer to the guidance document. Applicability of Seawater in Water Efficiency credits also updated

Campus Applicable
No
Internationally Applicable:
No
See all forum discussions about this credit »

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Requirements

Project teams earn points by achieving the following percent reductions for both building water use and process water use. The minimum water savings percentage for each point threshold is as follows:

Percentage Reduction

Points

30%

1

35%

2

40%

3

Building water use
Employ strategies that in aggregate use less water than the water use baseline calculated for the building (not including irrigation). The baseline shall meet the requirements of the Energy Policy Act (EPAct) of 1992 and subsequent rulings by the Department of Energy, requirements of the EPAct of 2005, and the plumbing code requirements as stated in the 2006 editions of the Uniform Plumbing Code or International Plumbing Code pertaining to fixture performance. Calculations are based on estimated occupant usage and must include only the following fixtures and fixture fittings (as applicable to the project scope): water closets, urinals, lavatory faucets, showers, kitchen sink faucets and pre-rinse spray valves. Fixtures used for clinical use, such as surgical scrub sinks and exam room sinks are exempt from this calculation. [Europe ACP: Water Use Baseline]
Table 1: National efficiency baselines for commercial and residential water-using fixtures, fittings and appliances

Fixtures, Fittings, and Appliances

Current Baseline (Imperial Units)

Current Baseline (Metric Units)

Toilets

1.6 gallons per flush (gpf)*

6 liters per flush (lpf)

Urinals

1.0 (gpf)

4.0 lpf

Lavatory (restroom) faucets

2.2 gallons per minute (gpm) at 60 pounds per square inch (psi), private applications only
(e.g., hospital patient rooms)
0.5 (gpm) at 60 (psi)** all others except private applications
0.25 gallons per cycle for metering faucets

8.5 liters per minute (lpm) at 4 bar (58 psi), private applications only (e.g., hospital patient rooms)
2.0 lpm at 4 bar (58 psi), all others except private applications
1 liter per cycle for metering faucets

Pre-rinse spray valves
(for food service applications)

Flow rate ≤ 1.6 (gpm)

Flow rate ≤ 6 liters per minute (lpm)

Showerheads

2.5 gpm at 80 psi per shower stall****

9.5 lpm at 5.5 bar (80 psi) per shower stall

*        EPAct 1992 standard for toilets applies to both commercial and residential models.
**      In addition to EPAct requirements, the American Society of Mechanical Engineers standard for public lavatory faucets is 0.5 gpm at 60 psi (2.0 lpm at 4 bar (58 psi)) (ASME A112.18.1-2005). This maximum has been incorporated into the national Uniform Plumbing Code and the International Plumbing Code.
***    EPAct 1992 standard for toilets applies to both commercial and residential models.
****  Residential shower compartment (stall) in dwelling units: The total allowable flow rate from all flowing showerheads at any given time, including rain systems, waterfalls, bodysprays, bodyspas and jets, must be limited to the allowable showerhead flow rate as specified above (2.5 gpm/9.5 lpm) per shower compartment, where the floor area of the shower compartment is less than 2,500 square inches (1.5 square meters). For each increment of 2,500 square inches (1.5 square meters) of floor area thereafter or part thereof, an additional showerhead with total allowable flow rate from all flowing devices equal to or less than the allowable flow rate as specified above must be allowed. Exception: Showers that emit recirculated nonpotable water originating from within the shower compartment while operating are allowed to exceed the maximum as long as the total potable water flow does not exceed the flow rate as specified above.

AND
Process water use
Employ strategies that in aggregate use less water than the process water use baseline calculated for equipment performance requirements as listed in Table 2. Calculations are based on estimated occupant usage and shall include only the following fixtures (as applicable to the project scope): clothes washers, dishwashers, ice machines, food steamers and combination ovens. Exemptions from calculations:
  • Appliances and equipment for which water is used toward human consumption may be excluded. For example, bread misters, soda machines, coffee making machines, misters for produce and fixtures used to fill sinks for washing produce.
  • Fixtures whose flow rates are regulated by health codes may be excluded from the calculation. For example, regulated medical equipment is excluded. See WE Prerequisite 2 for requirements applicable to heat rejecting medical equipment.
For applicable equipment not addressed in Tables 1 or 2, additional equipment performance baseline requirements may be proposed, provided that documentation supporting the proposed benchmark or industry standard is provided.
Table 2: Equipment performance requirements table

Equipment

Baseline (Imperial Units)

Baseline (Metric Units)

Commercial Clothes Washer – less than 80 lbs (36.3 kg)

9 gallon/CF/cycle

1,200 liters/m3/cycle

Commercial Dishwashers

Undercounter – high temp

1.98 gallon/rack

7.50 liters/rack

Undercounter – low temp

1.95 gallon/rack

7.38 liters/rack

Door type – high temp

1.44 gallon/rack

5.45 liters/rack

Door type – low temp

1.85 gallon/rack

7.00 liters/rack

Single tank rack conveyor – high temp

1.13 gallon/rack

4.28 liters/rack

Single tank rack conveyor – low temp

1.23 gallon/rack

4.66 liters/rack

Multi-tank rack conveyor – high temp

1.1 gallon/rack

4.16 liters/rack

Multi-tank rack conveyor – low temp

0.99 gallon/rack

3.75 liters/rack

Flight type

180 gallon/hour

681 liters/hour

Commercial Ice Machines

Water-cooled ice machine capacity < 450 lb/day (<204.11 kg/day)

<25 gal/100 lb ice

<95 liters/46 kg ice

Air-cooled ice machine capacity > 450 lb/day (>204.11 kg/day)

<25 gal/100 lb ice

<95 liters/46 kg ice

Air-cooled ice machine with remote condensing unit (w/o remote compressor) capacity < 1000 lb/day (<453.59 kg/day)

<25 gal/100 lb ice

<95 liters/46 kg ice

Air-cooled ice machine with remote condensing unit (w/o remote compressor) capacity > 1000 lb/day (>453.59 kg/day)

<25 gal/100 lb ice

<95 liters/46 kg ice

Air-cooled ice machine with remote condensing unit (with remote compressor) capacity < 934 lb/day (<423.66 kg/day)

<25 gal/100 lb ice

<95 liters/46 kg ice

Air-cooled ice machine with remote condensing unit (with remote compressor) capacity > 934 lb/day (>423.66 kg/day)

<25 gal/100 lb ice

<95 liters/46 kg ice

Air-cooled ice machine Self Contained Unit (SCU)

<25 gal/100 lb ice

<95 liters/46 kg ice

Water-cooled ice machines

Must be on closed cooling loop

Must be on closed cooling loop

Water-cooled ice machines once through cooling

Not allowed

Not allowed

Food Steamers

Boiler type steam cooker – batch cooking

8 gallon/hour/pan

30.28 liters/hour/pan

Boilerless type steam cooker – high production/cook to order

8 gallon/hour/pan

30.28 liters/hour/pan

Combination Oven

40 gph

151.42 lph

Countertop or stand mounted

40 gph

151.42 lph

Roll-in

60 gph

227.12 lph

Other equipment

Performance baseline based on industry standards

Alternative Compliance Paths (ACPs)

Europe ACP: Water Use Baseline
Projects in Europe may use the values defined by European Standards.
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