Water Main Cleaning and Lining
Of the 1060 miles of water main pipes in Minneapolis, 760 miles are constructed of unlined cast iron. Cast iron was the standard until the 1970’s and it was manufactured unlined. All pipes installed since the 1970’s are made of ductile iron that comes from the factory with a cement lining on the inside. With time, unlined cast iron mains build up mineral deposits that restrict the flow and can result in discolored water. Rusty water meets all regulatory requirements but is aesthetically displeasing.
This water main cleaning and lining project is to scrape the rust out of the pipes and install a potable water grade lining that keeps that will prevent new rust from forming. This will extend the life of the pipes as well as improve the water appearance and flow of water through the pipes.
Because the water main must be empty for the work, each building that taps into the water mains that are being worked on will be supplied with a temporary water line. The water in the temporary pipes will be sampled throughout the project to make sure that the water meets drinking water standards.
This work will not be assessed to the property.
2019 Water Main Cleaning and Lining
2019 project locations will be available soon.
2018 Water Main Cleaning and Lining
- Waite Park May 2018
- 8th Street South June 2018
- Fulton South April 2018
- Hoyer Heights May 2018
- 6th Street South August 2018
- Hollywood Ave NE August 2018
- Randolph St NE August 2018
Duration of Construction: 1 construction season with completion expected before October
Traffic Impact: Minimal
Cleaning and Mortar Lining
1 - Waite Park
34th Ave NE from Ulysses St NE to Garfield St NE
2 - 8th Street South
From Hennepin Avenue to Chicago Avenue
3 - Fulton South
W 46th Street to W 54th Street
York Ave S to France Ave S
4 - Hoyer Heights
36 ½ Ave NE from 37th Ave NE to Buchanan St NE
Cleaning and Structural Lining
5 – 6th Street South
From 20th Ave S to 21st Ave S
6 – Hollywood Ave NE
From Johnson St NE to Cleveland St NE
7 – Randolph St NE
From 26th Ave NE to 31st Ave NE
Nate Wold, General Foreman; 612-673-5600 or [email protected]
Robert Ervin, Project Engineer; 612-661-4830 or [email protected]
Last updated Apr 24, 2019