Press Release

California Water Service Increases Water Service Reliability with New Storage Tank in the Bayshore District

SAN MATEO, Calif. — A California Water Service (Cal Water) improvement project to replace two aging water storage tanks in San Carlos began this week. A single 20,000-gallon, steel-bolted tank will replace the previously demolished 15,000-gallon tanks, both more than 60 years old, to improve water supply reliability and augment water flow for customers in the area.

Crews will first relocate the existing residential electrical and communication services, which will allow for the removal of an onsite utility pole. Crews will then build the new tank within the current footprint. Site improvements will also be made as part of the project, including the addition of two retaining walls to increase hillside stability and station access. All improvements have been designed to comply with current seismic standards. The entire project is expected to be completed by the end of July.

"Our team has spent months planning for this important water system improvement project and ensuring that the new design will enhance not only reliability, but also the safety and efficiency of this site for the community," said Interim District Manager Mike Utz. "We are committed to providing our customers with quality, service, and value, and this upgrade is just one of the many ways we plan to continue fulfilling that promise."

Cal Water serves approximately 53,500 service connections in San Carlos, San Mateo, and South San Francisco and about 2 million people through 480,300 service connections in California. The company, which has provided water service in the area since 1931, was ranked "Highest in Customer Satisfaction among Water Utilities in the West" in 2016 by J.D. Power in its inaugural Water Utility Residential Customer Satisfaction Study. Additional information may be obtained online at