Registration for the sixth annual WaterSmart Innovations (WSI) Conference and Exposition, to be held Oct. 2-4 at the South Point Hotel and Conference Center in Las Vegas, is open.

The event, which has drawn attendees from 45 states and 27 foreign nations since its debut in 2008, will feature comprehensive professional sessions and an exhibition of the latest in water-efficient products and services. Several pre-show workshops not included in the WSI registration fee will precede the event on Oct. 1.

Full registration for WSI includes admission to the WaterSense Partner of the Year Awards luncheon Oct. 3, hosted by the Alliance for Water Efficiency and the U.S. Environmental Protection Agency’s WaterSense program.

The full-conference registration fee is $330 through June 1, after which the fee will increase to $390. To receive the reduced rate, visit, and enter the authorization code "gettheworm."

The Southern Nevada Water Authority is presenting WSI 2013 in partnership with the Alliance for Water Efficiency, the American Water Works Association, Audubon International, the California Landscape Contractors Association, the California Urban Water Conservation Council, WaterSense, Green Plumbers USA, Imagine H2O, the International Association of Plumbing and Mechanical Officials, the International Center for Water Technology, the International Code Council, and the Irrigation Association