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East Blithedale Pipeline Replacement Project

Pipeline replacement construction project

About the Project

Marin Water will replace a 100-year-old pipe with a new pipeline along East Blithedale Ave. in Mill Valley, beginning in late March or early April 2022. The project’s completion date is anticipated for September 2022. The project work will occur between Millwood Street and Camino Alto and covers replacement of more than one mile of pipeline.

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To streamline construction activity and minimize impacts to the surrounding community, Marin Water will coordinate with the City of Mill Valley and its contractor as the city implements its Street Rehabilitation Project along the same corridor. 

Project Update (April 29, 2022)

Great progress has been made on the East Blithedale Pipeline Replacement Project – approximately 1,500 linear feet of mainline pipe has now been installed to date! Work is currently underway between Camino Alto and Elm Avenue (at Park School). Construction crews will continue westerly towards downtown Mill Valley. Before work commences in front of any homes or businesses, the contractor will provide door-to-door notification to impacted community members with helpful information about the work and detours. 

Project Schedule & Road Safety During Construction

  • Construction will occur Monday thru Friday, 8 a.m. - 5 p.m. Note: Setup/ cleanup activities may occur outside of this timeframe. East Blithedale Avenue will be open outside of these construction working hours AND will be open on the weekends.
  • To accommodate Park School student pickup/ drop off, work hours will be limited to 9 a.m. - 3 p.m. daily on the section of East Blithedale Ave. between East Dr. and Alta Vista Ave.
  • Night work is permitted for this project from Sundays through Thursdays from 7 p.m. – 6 a.m. However, weekend work and night work are currently not anticipated.
  • The District will work with the project contractor, Maggiora & Ghilotti, to take all measures possible to minimize inconveniences associated with this project, including noise and traffic delays, however, motorists should follow traffic control signs, reduce vehicle speeds in construction zones, and allow for extra time on the weekday commute as heavy equipment and construction personnel will be on the roadway.
  • Motorists are advised to use alternative routes – including Tamalpais Junction, Miller Avenue, and Camino Alto – and combine vehicle trips and errands to reduce traffic congestion, when possible.

Potential Water Service Impacts

Water service may be interrupted for short periods of time during construction for properties near the construction area. If so, Marin Water will notify occupants of impacted properties 24 to 48 hours in advance of the interruption by hanging a notice on your front gate or front door. If a medical condition exists which requires that you receive continuous water service, please notify Marin Water at the contact information listed below as soon as possible.

Contact Information

Marin Water Pipeline Replacement Project:
  • Phone: Marin Water Construction Management team, 415-945-1560
City of Mill Valley’s East Blithedale Street Rehabilitation Project:

Maintaining Infrastructure is Top Priority

Marin Water provides safe, reliable, local drinking water to 191,000 customers spanning ten towns and cities in a 147-square-mile area of the county. Updating Marin Water’s aging infrastructure, such as the 100-year old E. Blithedale pipeline, is critical to ensuring the reliability and resiliency of the district's water service delivery system for many years to come.