Morongo Basin Conservation Association hosts annual meeting on desert developments, conservation and long-term sustainability
Residents of the Morongo Basin gathered on Saturday (1/25) for the Morongo Basin Conservation Association’s (MBCA) annual meeting, where a wide range of local environmental issues was discussed. The featured presentation focused on gray water and how reusing household water could contribute to long-term desert sustainability.
Founded by local residents in 1969, the Morongo Basin Conservation Association has spent more than five decades advocating for the protection of the desert landscape. The group marked its long history at the meeting, where members heard updates on conservation efforts, public education, and current threats to the basin, including large-scale development proposals that may strain water and land resources. MBCA President Steve Bardwell opened the meeting, reflecting on the organization’s roots and its ongoing role in shaping the future of the desert.
The day’s main presentation focused on gray water systems. The talk was led by Nicholas Holmes, a gray water specialist based in Joshua Tree. Gray water is lightly used household water from showers, sinks, and washing machines that can be reused for landscape irrigation rather than sent to septic systems or sewer lines.
Holmes explained that in desert communities, gray water can significantly reduce overall water use while supporting trees and other long-lived plants. He emphasized that plants do not require potable water and often benefit from the nutrients already present in gray water. Household water is clean water before use. Gray water is lightly used water that can often be safely reused. Blackwater is sewage and must be treated before it is returned to the environment.
Holmes offered a detailed look at planning, constructing, and operating a gray water system. He discussed plants that respond well to irrigation with gray water, and those that do not, such as the Joshua tree.
“Make sure you avoid irrigating those natives and choosing things like fruiting shrubs that are desert-adapted. Pomegranates are a great species. They love it. Mesquite, Palo Verde, and desert willow. Olive trees do well with it, and shrubs like rosemary go bonkers with it.”
California legalized residential gray water systems in 2009, and some systems, such as laundry-to-landscape setups, can be installed without a permit if guidelines are followed.
Gray water is a practical response to water scarcity, reducing strain on aquifers, lowering household water bills, and extending the lifespan of septic systems. Holmes also encouraged residents to be mindful of soaps and cleaning products, recommending plant-safe, biocompatible options to protect soil health.
The Morongo Basin Conservation Association regularly hosts educational talks and workshops on desert-wise living, water conservation, and environmental stewardship.
For more information about upcoming MBCA events and programs, visit mbconservation.org.
