The Effect of Roof Material on the Quality of Harvested Rainwater

Project Summary

Rainwater harvesting is rapidly expanding in Texas and elsewhere. However, few systematic studies have been conducted on the effect of roofing materials on the quality of harvested rainwater. The main objective of the research is to assess the effect of different commonly used roofing materials on the chemical and biological quality of harvested rainwater and to recommend roofing materials that would be most suitable for rainwater harvesting applications.

TWDB Contract Manager:
Sanjeev Kalaswad
Funding Recipient:
The University of Texas at Austin
Project Administrator:
Dr. Mary Jo Kirisits, University of Texas at Austin
Lady Bird Johnson Wildflower Center, Austin, TX
Project Start Date:
September 1, 2008
Project Completion Date:
January 31, 2011
Total Project Cost:
TWDB Share of Project Cost:
The research will provide recommendations - backed by scientific data - to the rainwater harvesting community in Texas on the selection of roofing material for rainwater harvesting.

Project Details


Project Sponsor:

Texas Water Development Board
Sanjeev Kalaswad, Ph.D. - Contract Manager
Texas Water Development Board
1700 N. Congress Avenue
Austin, TX 78711

Funding Recipient:

The University of Texas at Austin
Dr. Mary Jo Kirisits - Principal Investigator
Department of Civil, Architectural and Environmental Engineering
The University of Texas at Austin
1 University Station C1786
Austin, TX 78712

Project Cooperator:

Lady Bird Johnson Wildflower Center
Steve Windhager, Ph.D.
Director, Landscape Restoration Program
Lady Bird Johnson Wildflower Center
4801 La Crosse Avenue
Austin, TX 78739-1702

Project Milestones

Event Date
Announcement of Request for Proposals in Texas Register March 7, 2008
Proposal received by TWDB April 23, 2008
TWDB Board approval June 23, 2008
Contract execution date October 22, 2008
Planned study end dates December 31, 2009 - Phase I
January 31, 2011 - Phase II

Progress Reports

Final Reports