My pH is at 9.0, sometimes 9.5 - It's just the pH of my water supply, but my fish are all happy and healthy and I have platies breeding like rabbits so... Never try to lower your pH with chemicals or anything. It'll do more harm than good!
If it ain't broke, don't fix it!
I wonder why tap water pH is so different everywhere.
It varies depending on what rocks the water flows over between fallling as rain and coming out of your taps. Some rocks dissolve easier than others and and different rocks are made from different minerals. The type of minerals and the amount of rock that dissolves affects both pH and hardness. For instance chalky rock causes hard alkaline water (very soluble and lots of calcium)and granite usually results in soft water as it hardly dissolves at all.