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LEED v4.1

Existing Buildings

Sustainable Sites
Rainwater Management

LEED CREDIT

EBOM-v4.1 SSc1: Rainwater management 1 point

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SPECIAL REPORT

LEEDuser expert

Ashwini Arun

WSP
Senior Sustainability Manager

SPECIAL REPORT

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Credit language

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

Requirements

Use low-impact development (LID) practices to infiltrate, evapotranspirate, collect and reuse water onsite from 25% of the impervious surfaces for the 95th percentile storm event.

Establish and implement an annual inspection and maintenance program of all rainwater management facilities to assure continued performance.

Document the annual inspections, including identification of areas of erosion, maintenance needs, and repairs. Perform necessary maintenance, repairs, or stabilization within 60 days of inspection.

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What does it cost?

Cost estimates for this credit

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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.

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Frequently asked questions

Where can I find long-term rainfall data?

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Are there any specific tools or computer programs that are recommended for calculating runoff volume?

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.)

What are some low-impact development (LID) and green infrastructure (GI) strategies?

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Where can I find example calculations?

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What about rainwater runoff from greenfield areas in my LEED project boundary?

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Addenda

4/10/2020Updated: 4/17/2020
Form Update
Description of change:
Updated to fix cell reference in the Historical Data tab
Campus Applicable
No
Internationally Applicable:
No
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Documentation toolkit

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LEEDuser expert

Ashwini Arun

WSP
Senior Sustainability Manager

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USGBC logo

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

Requirements

Use low-impact development (LID) practices to infiltrate, evapotranspirate, collect and reuse water onsite from 25% of the impervious surfaces for the 95th percentile storm event.

Establish and implement an annual inspection and maintenance program of all rainwater management facilities to assure continued performance.

Document the annual inspections, including identification of areas of erosion, maintenance needs, and repairs. Perform necessary maintenance, repairs, or stabilization within 60 days of inspection.

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.

Where can I find long-term rainfall data?

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.)

Are there any specific tools or computer programs that are recommended for calculating runoff volume?

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.)

What are some low-impact development (LID) and green infrastructure (GI) strategies?

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.)

Where can I find example calculations?

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.)

What about rainwater runoff from greenfield areas in my LEED project boundary?

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.)

4/10/2020Updated: 4/17/2020
Form Update
Description of change:
Updated to fix cell reference in the Historical Data tab
Campus Applicable
No
Internationally Applicable:
No

LEEDuser expert

Ashwini Arun

WSP
Senior Sustainability Manager

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