South Reservoir Replacement

EBMUD recently replaced the South Reservoir, located at the north end of Gail Drive near Grove Way in Castro Valley, with a 9 million gallon water storage tank within the footprint of the existing reservoir basin. The reservoir replacement project improves water quality and increases reliability in the distribution system. The new reservoir was designed to meet current seismic design standards. No significant change was made to the views of the reservoir from surrounding residences as a result of this project and most of the existing embankment slopes remained in place. Additional landscape screening was planted along the western and southeast edges of the reservoir site perimeter to enhance existing screening of views of the new tank from residents along Grove Way and Gail Drive. 

Workplan and schedule

Demolition of the reservoir was completed in December 2015. Final construction activities such as landscaping and also modifications to the piping in preparation for storage tank filling are ongoing. Construction is anticipated to be completed in January 2020. Construction hours are Monday to Friday, 7 a.m. to 6 p.m.

Contact information

Laura Luong, Community Affairs Representative
Phone: 510-287-0140

Emergencies or after-hours, call EBMUD at 866-403-2683

Published studies and other resources

Environmental documentation with additional information is listed below.