[officedweller]

The Port Mann Water Tunnel is almost completed:

The 2.1-metre water main is slated to be finished by the end of next year, at which time it will carry about a billion litres per day from the Coquitlam reservoir to taps mainly south of the Fraser, Gant said. The existing water main will remain open for another four years to ensure the new tunnel is operating properly.

The Coquitlam reservoir is one of three water sources in Metro Vancouver and provides drinking water to the Tri-Cities south of the Fraser, and as far away as Vancouver’s Little Mountain. The Capilano and Seymour reservoirs on the North Shore provide the bulk of drinking water to the rest of the region through three water mains.

Metro Vancouver has just started designing another tunnel, which would run under the Burrard Inlet, to replace the three water mains from the North Shore. That tunnel would likely be the same depth as the Port Mann tunnel, although twice the size in diameter.

http://www.vancouversun.com/Huge+wat..._lsa=fe5f-0f0f