The Sun Valley water system ownership was transferred from the Sun Valley Irrigation District to the RDOS on January 1, 2017. The system is located in the southeast area of Okanagan Falls and provides domestic and irrigation water to 28 connections. The water source is a deep well with a 50 hp pump installed that feeds into a reservoir.  The water demand on the system ranges from 7.5 US gpm in the winter to 550 US gpm during the summer months.  The reservoir is located at the bottom of the water system so all the water must be pumped up to the customers by a series of pumps that turn on as the demand increases  There are eight hydrants on the water system and fire protection is provided by OK Falls Fire Department.