MMWD Replacing Aging Pipes, Transferring Water Service Connections in Tamalpais Valley Area of Mill Valley

The Marin Municipal Water District (MMWD) will be installing some 700 feet of 6-inch welded steel pipe to replace leak-prone 4-inch cast iron pipe on Ash Street in the Tamalpais Valley neighborhood of Mill Valley.

In the same neighborhood on Marin and Northern avenues, more than 4,200 feet of 4-inch cast iron pipe from the 1930s will be abandoned and the services transferred  to an existing 10-inch welded steel pipe installed in the 1950s. The County of Marin is repaving Marin and Northern avenues this summer, so MMWD scheduled the pipeline replacement to be completed first to prevent damage to the underlying pipes.

MMWD received three bids for the project. The Board of Directors awarded the contract to Penngrove-based Piazza Construction, which submitted the lowest responsible bid of $221,979.50.

Work will begin in mid-June and is expected to be completed during the first week of August. The contractor’s normal work hours are approximately 8 a.m. to 5 p.m. Both the contractor and MMWD will make every effort to minimize traffic disruptions during construction. Water service may be interrupted for short periods during construction; the district will notify those affected 24 to 48 hours in advance of any needed shutdowns.

Customers with questions about the project can contact Senior Engineer Steve Suskind at (415) 945-1517.