Investing in your water system
Project Overview
Marin Water undertakes 3-5 drinking water pipeline replacement projects each year throughout its service area, with a goal of replacing 9 miles of pipeline annually. 2 Replaces underground
drinking water pipeline
along Bolinas Road.
Service laterals (from the
main to the service meters)
will also be replaced as part
of this project.
Residential &
Commercial Piping
Project Benefits
3 This pipeline replacement project will:
• Replace cast iron pipe that is over 100 years old with modern, seismically resilient welded steel pipe
• Increase fire flow capacity by +20% to hydrants
• Cut water waste from leaks in the water system
• Reduce risk of major water main ruptures and
associated damages
• Make the water system stronger to better withstand
natural disasters such as earthquakes
Rock Ridge Pipeline Project
1.4 miles of 6” and 8” welded steel and
PVC pipe installed in 2025
Outreach
4 Direct-mailed advanced
notice project letter
(Mailed November 2025)
Door hangers
(During construction)
Direct-mailed
construction info flyer
(To be mailed mid-March)
marinwater.BolinasPRP
Downtown Business Support
5 • Partner with Fairfax Chamber of Commerce
to coordinate on communication to the
downtown business community
• Hold meeting with downtown businesses
prior to construction to share detailed
schedule and answer questions (Date TBD
once contractor provides construction
schedule, likely late March/early April)
• Digital and printed signage to reinforce that
downtown Fairfax businesses remain open
during construction.
Other recent water system projects in Fairfax
Park Road Pipeline Project
• Completed summer 2025
• 1,500+ ft of pipeline
• 28 service laterals replaced
• 4 hydrant laterals replaced
Rockridge Pipeline Project
• A Fire Flow Improvement Program project
• Completed spring 2025
• 7,500+ ft of pipeline
• 102 service laterals replaced
• 16 hydrant laterals replaced
What’s next?
Bolinas Road Pipeline Project Schedule
• April – September: Replace water
pipeline and transfer services along
Bolinas Road
• April: Start near Deer Park Villa and
work north toward Broadway
• Downtown: Work will be completed at
the end of the construction window
• Detailed Schedule: Will become
available in late March, early April
• Project Updates: Available at
marinwater.org/BolinasPRP
4,350 FEET OF
NEW PIPELINE
Start Location
Direction of Work
106 SERVICE
LATERALS
What to expect during construction?
• Construction will occur on weekdays, 8 a.m. to 5 p.m. • Heavy equipment and construction personnel will be in the roadway.
• Traffic control signs will be in place, reduced vehicle speeds required (allow for extra time for travel in this area) • Parking restrictions are anticipated in order to maintain traffic flow o Parking will be available at 5:00 pm each evening
• Temporary water service interruptions.
o Marin Water will notify you 24-48 hours in advance by hanging a notice of the planned water shut-off on your front gate/door 8 Need assistance during construction?
Call the Marin Water Construction
Management team: 415.945.1560
Fast facts about the project
4.3K
Feet of new water
pipeline
106
New water service
laterals
7 New hydrant service
laterals
2 New fire line service
laterals