I see this is an old issue and I don't recall there ever being a definitive answer so I'm putting the question out to people who have more experience than me.
The way my Xroads tile is numbered is that the water tower is #1 and the Xroads itself is #6. This is the same as in the pdf manual from the repos site and on my invasion cards.
I have read that some people have their Xroads tile numbered differently in that the water tower is numbered #6.
So whats the deal? Which way is correct? Does it even matter the order you resolve the locations in? Since my tile corresponds with the cards and the manual I assume this was the original way the locations were numbered, so why was there a change made (unless it was a misprint)?