Larry Lloyd, chief operations officer for the Beaver Water District, talks to Springdale Har-Ber High School students about the importance of chlorine treatment in drinking water Wednesday over a scale model of the drinking water treatment facility at Beaver Water District’s administrative office located at 301 N. Primrose Road in Lowell. Seventy Advanced Placement Environmental Science students from Har-Ber and Springdale High School visited the facility as an educational field trip to learn about what the Beaver Water District does and how it affects the surrounding environment.