The District: Irvine Ranch Water District (IRWD) is a progressive, values-driven agency, with an international reputation for its leading-edge financial management practices, water recycling program, water use efficiency practices, water banking, urban runoff treatment, and energy generation and storage. New employees hired on or after September 29th through December 31, 2012, and employees hired on or after January 1, 2013 who have been in PERS membership or in membership with a reciprocal retirement system, will receive benefits under the California Public Employees Retirement System at 2 percent at age 60 formula.