WMBD/WYZZ - PEORIA - An educational theater group hopes its message of water conservation runs deep with Peoria students.  "The National Theater for Children" delivers plays with audience participation to teach kids the importance of water in our communities.  The troupe has performed in front of 2,000 Illinois students teaching them everything from preventing pollution to using water wisely.  In addition to the show, classroom materials are handed out to the kids.  The theater group will continue their programs in Peoria at St. Mark School and Tyng Primary.