Irvine Ranch Water District was deeply saddened to hear of the passing of former Board Member Mary Aileen Matheis — a valued leader in the water industry, the Orange County community, and in state and national professional and charitable circles. Mary Aileen served as an IRWD Board member from 1988 to 2020, serving four times as president and eight times as vice president during that time. She was pivotal in the creation of IRWD’s San Joaquin Marsh and its Campus, and in the development of the District’s water infrastructure, water efficiency and supply diversification efforts that has made IRWD an internationally recognized leader in water-supply reliability. (Mary Aileen Matheis was a long time board member of the Water Education Foundation.)