I'm not sure how the source of the water could affect how it gets to some of your faucets.
You have cold water going into your water heater, and hot coming out. Where it goes is determined by the routing of the hoses: not by it's source.
Although it wouldn't hurt to make sure that your outside shower faucets are completely closed. I recall a couple of posts in here about leaving them on, and getting hot water from the cold side.
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