Ottawa Main Rep

Project Engineer: Tim Bagstad 651-266-6283

The water main on Ottawa Avenue will be cleaned and lined with cement mortar. The original unlined cast iron water main within the project area was installed in 1923.

As unlined pipes age, mineral deposits collect inside the pipes which can decrease water volume and hinder flow for fighting fires. Such deposits can also affect water quality. Water main cleaning and lining is a method of pipe rehabilitation that is used when water mains are structurally sound but suffer from such corrosion and mineral deposits. The pipes will be cleaned with a tool that scrapes off internal mineral deposits. Then the pipe will be sprayed with a thin layer of cement mortar.  This will increase flow capacity in the water main and provide a protective barrier against internal corrosion.

SPRWS will be hiring a contractor to clean and line the existing 6" cast iron water main. SPRWS crews will perform all excavation for the project.

Project Updates

Temporary water supply setup is in progress.
Excavation to begin the week of June 3rd.

Project Updates

Excavation is in progress. Cleaning and lining work to follow.

Project Updates

Lining work is complete. Testing and restoration are in progress.