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LEED v4
Existing Warehouses & Dist. Ctrs.
Water Efficiency
Indoor water use reduction

LEED CREDIT

Warehouses-EBOM-v4 WEc2: Indoor water use reduction 2-5 points

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LEEDuser expert

Dan Ackerstein

Ackerstein Sustainability, LLC
Principal

SPECIAL REPORT

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Credit language

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

Intent

To reduce indoor water consumption.

Requirements

Option 1. Calculated water use (1–5 points except Data Centers, 1–4 points Data Centers)
Establishment

None.

Performance

Have fixtures that use less water than the baseline calculated in WE Prerequisite Indoor Water-Use Reduction. Points are awarded according to Table 1.

Table 1. Points for reducing calculated water use beyond the prerequisite level.

Additional percentage reduction Points (except data centers) Points (data centers)
10% 1 1
15% 2 2
20% 3 3
25% 4 4
30% 5 --

Confirm that calculations are up to date. Demonstrate that all purchases made since the end of the performance period meet the design performance requirements.

OR

Option 2. Metered water use (1-5 points except Data Centers, 1-4 points Data Centers)
Establishment

Meter fixtures and fittings, and record meter data for one year to establish a water-use baseline.

Performance

For projects with at least 80% of fixtures and fittings metered, show a reduction from the baseline year of meter data.

Table 2. Points for reducing metered water use

Percentage reduction Points (except data centers) Points (data centers)
< 5% 1 1
5-10% 2 2
10-15% 3 3
15-20% 4 4
>20% 5 --
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LEEDuser expert

Dan Ackerstein

Ackerstein Sustainability, LLC
Principal

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USGBC logo

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

Intent

To reduce indoor water consumption.

Requirements

Option 1. Calculated water use (1–5 points except Data Centers, 1–4 points Data Centers)
Establishment

None.

Performance

Have fixtures that use less water than the baseline calculated in WE Prerequisite Indoor Water-Use Reduction. Points are awarded according to Table 1.

Table 1. Points for reducing calculated water use beyond the prerequisite level.

Additional percentage reduction Points (except data centers) Points (data centers)
10% 1 1
15% 2 2
20% 3 3
25% 4 4
30% 5 --

Confirm that calculations are up to date. Demonstrate that all purchases made since the end of the performance period meet the design performance requirements.

OR

Option 2. Metered water use (1-5 points except Data Centers, 1-4 points Data Centers)
Establishment

Meter fixtures and fittings, and record meter data for one year to establish a water-use baseline.

Performance

For projects with at least 80% of fixtures and fittings metered, show a reduction from the baseline year of meter data.

Table 2. Points for reducing metered water use

Percentage reduction Points (except data centers) Points (data centers)
< 5% 1 1
5-10% 2 2
10-15% 3 3
15-20% 4 4
>20% 5 --

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.

LEEDuser expert

Dan Ackerstein

Ackerstein Sustainability, LLC
Principal

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