If you are interested in the general water quality in the Victoria area you can get monthly water reports from the CRD web site. This will only tell you what the water was like at that specific test period though and will not tell you what you may end up with on any given day. It's probably best just to use RO water and then you don't have to worry about it.
http://www.crd.bc.ca/water/qreports.htm