Pipe Materials in Calgary Presentation Slide #02

Calgary is a city of almost 900,000 people and one of the fastest-growing in North America ; we expect to reach 1 million before 2005. We have 4000km of water mains, the majority of them relatively young, since half our growth has been since 1970. An unusual feature is the proportion that is PVC, now the single largest component of our system. Another is that the majority of our ductile iron pipe is YDI, yellow-jacket pipe that is especially well protected against corrosion, both with coating and cathodic protection.