Learn how to conserve water and protect the environment. Tour Upper Trinity’s Water-Wise Demonstration Garden, visit educational booths and get to know your sprinkler system. The garden and booths will be open 9 a.m. to noon. A “Get to Know Your Sprinkler System” class will be offered 10 a.m. to 11 a.m. Registration for the class is required. Contact: Erin Blackman, eblackman@utrwd.com. Sponsored by the Upper Trinity Regional Water District, City of Lewisville and KeepLewisville Beautiful. Free.