Rainwater Harvesting for Drylands and Beyond by Brad Lancaster

Demonstration Sites


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Walter Cronkite School of Journalism and Mass Communication
Condensate is directed to a storage tank from which it is distributed to help irrigate the landscape.

Habitat at the Phoenix Convention Center
Tank storage of condensate


Biodesign Institute at Arizona State University (Building B)
Condensate is directed to a storage tank from which it is distributed to help irrigate the landscape. Landscape designed by Ten Eyck Landscape Architects.


College of Architecture, Planning, and Landscape Architecture (CAPLA) building’s landscape, University of Arizona
A wonderful water-harvesting landscape that harvests about 95,000 gallons of condensate a year from the three air conditioners on the building’s roof. Roof runoff and drinking-fountain greywater are also harvested. A must-see in Tucson.


New York

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Brooklyn Grange Farm
A one-acre rooftop farm using condensate from roof top air-conditioners as part of their irrigation waters for the farm.

Drops in a Bucket Blog

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Upcoming Events

  1. Desert Green XXV

    September 30 - October 1
  2. 2021 Rocky Mountain Natural Building Conference

    October 14 - October 16
  3. Water Harvesting Design Certification: Fall 2021

    November 8 - November 20
  4. Water Harvesting Design Certification: Spring 2020

    February 28, 2022 - March 12, 2022

Umbrella Newsletter

The Umbrella: Summer 2020

THE UMBRELLA: A catch-all of resources, events, media, and more from Brad Lancaster In this time of Covid-19 and spending more time at home to be safe, I’ve been grateful for the solace, inspiration, and bountiful sustenance my water-harvesting gardens, landscape, and neighborhood forest has provided me, my family, friends, and neighbors. Record summer heat […]

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