Second phase of gray water trials to begin at Texas A&M

UVALDE, Texas – The second phase of a study on the use of gray water for landscape irrigation will soon be underway and its results may affect how municipalities view gray water as an alternative non-potable water source statewide and beyond, said the Texas A&M AgriLife Research scientist leading the study.

Dr. Raul Cabrera, AgriLife Research horticulturist at the Texas A&M AgriLife Research and Extension Center in Uvalde, said he is now in the process of starting the second phase of his study on the long-term effects of gray water irrigation on the growth, performance and aesthetics of several ornamental plant species.

“Gray water provides a potential alternative, non-potable water source available in practically every home,” Cabrera said. “By definition, gray water is simply wastewater, basically soapy water coming primarily from washing machines, showers and bathtubs.

“The research is particularly useful for application in urban areas where as much as 50 percent of household water is used for landscape irrigation.”

He said with many parts of the nation facing water restrictions, competition for water resources and drought, it is becoming more necessary to minimize our dependence on potable water supplies.

“Using native and adaptive plants, applying good management practices such as spreading mulch to retain moisture and the wise use of supplemental irrigation are vital in preserving the state’s and nation’s potable water resources,” Cabrera said.

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