I doubt availability of free water will be a problem on the pacific coast. I usually make it a point to have my purchases in my hand when I ask.

I also doubt that water quality will be an issue on the pacific coast. If you tour elsewhere it is a good idea to sample some of the water before leaving town. I know that we found water in some places to be absolutely unfit to drink. Parts of Montana, Wyoming, and Colorado come to mind. Remember that if it tastes bad when cold it will taste awful when hot.

One other tip, be careful not to accidentally buy distilled water. I will only make that mistake once it was terrible. Thank god we had some gator aid powder or I don't think I could have stomached it.