Project overview
EBMUD is upgrading the wastewater collection system that serves the Lafayette Reservoir Recreation Area at 3849 Mt. Diablo Boulevard in Lafayette, California. Work will replace aging infrastructure, improve reliability, and support compliance with public health and environmental regulations. Construction is planned from fall 2025 through fall 2026. The recreation area will remain open.
The Lafayette Reservoir is one of five East Bay reservoirs managed by the East Bay Municipal Utility District. The reservoir is a popular recreation area that provides public access to protected watershed lands. The Lafayette Reservoir Recreation Area Wastewater Collection System Improvements project will upgrade aging components and reduce the risk of failures that can lead to restroom closures and costly maintenance.
Scope of work
Core replacements:
- Replace the existing sanitary sewer lift station and associated piping that convey wastewater from the Visitor Center, Ranger Residence, and Maintenance Building.
- Install a new backup generator and fuel tank to maintain service during power interruptions.
- Add a radio tower for reliable system communications.
Site improvements:
- Replace a portion of the retaining wall along the roadway to enhance safety.
- Improve access for maintenance while protecting the surrounding environment.
- These upgrades will improve reliability, reduce unplanned outages, and support compliance with public health and environmental regulations.
Schedule
Fall 2025 to Fall 2026.
Dates are subject to change based on weather, material availability, and field conditions. EBMUD will communicate any significant changes in advance.
Public access during construction
The recreation area will remain open to visitors during construction. For safety and community awareness, EBMUD will:
- Post signage, including an electronic message board at the entrance, before construction begins to inform visitors about anticipated work.
- Maintain a twelve-foot travel lane for fire and park access at all times. Flaggers will be onsite for single lane traffic control when needed.
- Keep sidewalks open whenever it is safe to do so. If a pedestrian route must be closed, alternate routes and clear signage will be provided.
Location
Lafayette Reservoir Recreation Area
3849 Mt. Diablo Boulevard, Lafayette, California
Construction traffic will use established access routes. Please watch for workers and follow posted signs.
Community engagement
EBMUD will keep the community informed throughout this project with onsite notices and updates to this page. For broader reservoir area planning and construction updates, please also see information about the Lafayette Reservoir Tower Retrofit Project and other nearby projects on the EBMUD website.
Contact
For questions about this project, contact EBMUD Community Affairs:
Email: construction-east@ebmud.com
Phone: (510) 287-2053
Last updated: August 14, 2025