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Hinkle Reservoir Liner and Cover Replacement Project

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Hinkle Reservoir Liner and Cover Replacement Project

The Heart of the District

Before water is delivered to your home, it passes through the 62 million-gallon Hinkle Reservoir. This facility is the main storage for all the Wholesale Agencies, which include Citrus Heights Water District, Fair Oaks Water District, Orange Vale Water Company, a section of the City of Folsom north of the American River, and San Juan’s own Retail Service Area. To meet new environmental regulations and protect water supplies from contamination, San Juan installed the current Hypalon geomembrane liner and floating cover in 1980. This system was originally guaranteed for a period of 25 years. San Juan has worked hard since 1980 to maintain the cover and liner, testing it regularly to ensure its integrity. The liner and cover are now more than 40 years old and San Juan needs to replace them this winter.

During the 6-month project, San Juan must take Hinkle Reservoir out of service, starting in early November. Working with its wholesale agency partners, San Juan has developed a plan to maintain reliable service to our more than 150,000 customers. This plan coordinates activities by San Juan, the Bureau of Reclamation, and regulators to prevent interruptions to your water supplies.

While San Juan and its partners are planning for every contingency, the success of this major infrastructure project requires your help. We are asking that all customers turn off their irrigation systems starting November 1, 2022.

This action by you and our other customers will minimize the demand on San Juan’s treatment plant and remaining storage capacity and will help us maintain our ability to meet your water needs during the project. Working together, we can successfully complete this critical infrastructure project and secure another 30-40 years of quality service from Hinkle Reservoir.