The 2009 unit price for water on my Enmax bill is $1.254 per cubic meter, plus it looks like about a $0.3585 per cubic metre "Water Basic Service Charge."
The 2010 rate is $1.3067 per cubic metre with a $0.411 per cubic metre service charge.
The service charges I've divided per metre, since the bill doesn't divide it that way, so I don't know if it is in fact, linear.
I hope that helps.
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