The St. Pauls Center is the third Watts Works Learning Center in the U.S., joining centers in North Andover, Massachusetts, and Woodland, California.

Three-day event will occupy 10 exhibition halls for the first time, while a record-breaking 380,500 square feet of exhibition space will host 1,300 exhibitors from 22 countries and regions.

Using up to 96 percent of the fuel, a commercial facility with a cogeneration system can produce both energy-efficient heat for domestic hot water and electricity to reduce energy consumption from external power sources.

As the number of droughts and water shortages continues to increase nationally, the existence of state-level laws that advance water efficiency and conservation is becoming more critical.