Marin Water is proud of its rich history as California’s first municipal water district, established in 1912. With that distinction, comes the responsibility to address aging infrastructure. Many of the district's pipelines are more than 100 years old. The Capital Improvement Program responsibly replaces aging and leak-prone pipelines with pipes that better withstand earthquakes and have greater overall reliability. For any construction project questions, please contact the Engineering Division at 415.945.1560.

Active Construction Projects

Fire & Fuels Management 
With nearly 22,000 acres of public land within the Mount Tamalpais Watershed and the hills of west Marin under our care, the District continues to engage in critical vegetation management work. The ongoing, strategic efforts follow the District's Biodiversity, Fire and Fuels Integrated Plan, which is designed to not only reduce the risk of devastating wildfire, but also bolster ecological health through the removal of invasive plant species. Learn more. 

Pine Mountain Tanks Project
The Pine Mountain Tunnel was constructed in 1919 to convey water from Alpine Reservoir to Fairfax and San Rafael and was converted to a water storage facility in 1971 and remains in that use today. Replacing the 100-year-old tunnel with two 2-million gallon concrete tanks will enhance water system resiliency and replaces aging infrastructure on the District’s watershed. Learn more. 

Wolfback Ridge Tank Rehabilitation Project 
This project will replace corroded roofs, gussets and roof hat plates of two, 25,000-gallon welded steel potable water tanks on Wolfback Ridge in Sausalito. The project will also install new interior and exterior protective coatings on the tanks. Rehabilitating both welded steel tanks, rather than replacing, is a cost-effective strategy to extend their useful life for the District and the community they serve. Learn more. 

Lagunitas Creek Habitat Enhancement Project
This project is meant to improve spawning habitat for protected and endangered aquatic species within Lagunitas Creek. More than a dozen sites have been selected for habitat improvement, which involves the addition of hundreds of logs and thousands of tons of gravel to provide shelter as well as to create deeper, slower pools for rearing. Learn more.

Marin City Pipeline Replacement Project
This project replaces all existing cast iron, galvanized steel and asbestos cement water mainlines in Marin City. In all, 3.65 miles of water main, as well as 192 service laterals, will be replaced. Learn more.

Fairfax Manor 1st Pump Station Reconstruction Project
This project will replace the original pump station at Tamalpais Road and Berry Trail that was damaged beyond repair, and ensures reliable potable water and fire flow supply for the Fairfax Manor community. Learn more. 

Glenwood Transmission Pipeline Replacement Project
This Fire Flow Improvement Program project includes the installation of nearly 6,500 feet of welded steel pipe in the City of San Rafael. This project increases the volume of water available for fighting fires as part of Marin's voter-approved Fire Flow Program. Learn more.

San Geronimo Treatment Plant Roof Replacement
The existing roof at the San Geronimo Treatment Plant is leaky and vulnerable to fire. This project will replace the aging roof membrane with a more durable, fire-resistant roofing system to improve fire hardening of the treatment plant. Learn more. 

Park Road Pipeline Replacement Project
This project includes the replacement of more than 1,500 feet of aging, leak-prone water pipe in coordination with the Town of Fairfax's street overlay project. The new, welded steel pipe will increase seismic resiliency and water quality. Learn more. 

Bridgeway Pipeline Replacement Project
This project will replace 870 feet of aging, leak-prone cast iron and cement pipe with seismically resilient welded steel pipe in Sausalito. Some of the pipes in this area are nearing 100 years old, and have a history of costly failures. Learn more.