Water Efficiency

Photo: Ospr3yy. License: CC BY-SA 3.0

Water efficiency in buildings requires a set of strategies for reducing water consumption.

Water-saving appliances and fixtures are an inexpensive (often cost-neutral) way to achieve greater efficiency. Rainwater or graywater reuse and even blackwater treatment are ways to push the envelope.

Water Efficiency

Deep Dives

Get up to speed on complex topics. You can also earn CEUs and download PDF Spotlight Reports.

Quick Takes

Jump straight to the essentials with these short explanations of green building concepts.

Product Guidance

Unbiased information from our product experts helps you separate green from greenwash.

  • BuildingGreen Announces Top 10 Products for 2024

    Product Review

    BuildingGreen’s Top 10 industry-transforming products this year include innovative heat-pump energy storage, electric construction equipment, PFAS-free textiles, healthier lighting, PV circularity, and more.

  • Showerheads

    Product Guide

    Showerheads that use no more than 1.75 gpm and are WaterSense labeled to address spray force and coverage

  • Toilets

    Product Guide

    These residential and commercial models meet WaterSense criteria for efficiency and performance.

  • Urinals

    Product Guide

    Waterless urinals and high-efficiency fixtures that use 0.25 gallons per flush or less

In The News

We break news down to the essentials and provide expert analysis.


Thought-provoking opinions from the most trusted minds in sustainability.

  • Water: The Back Seat Driver

    Blog Post

    Welcome to our new blog dedicated to the issues of water, water efficiency, and water policy.

  • Bringing Water Back into the Discussion


    Most Americans treat freshwater as if it were limitless and free, even as water shortage is becoming a reality in many areas of the United States. But there are many cost-effective ways to reduce that consumption.

Learning Resources

Syllabus supplements and CEU content, with automatic reporting for AIA and GBCI.

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