The IVCSD supplies the communities of Greenville and Crescent Mills, California with fresh, clean drinking water.
The fresh water system for the town of Greenville is made up of Round Valley reservoir, a water treatment plant with a 720,000 gallon storage tank, and 6 miles of delivery mains, all monitored and maintained by the CSD's Water Department. Additionally, residents of Crescent Mills are served by their own system which is made up of a spring, a treatment plant, and a 231,000 gallon storage tank, as well as distribution mains. Both systems provide clean fresh water for all residents as well as for all amenities. Each lot is metered, and monthly billings are made according to water usage.