The bicarbonate is so high that the water needs to be diluted or treated (say, boiled to precipitate out much of the bicarb). The magnesium is way too high as well.
My bicarb level is much lower, and it works great for one beer style (stout) but for the others I had to do something. I ended up buying a RO water system for brewing, but before that I did try boiling to precipitate out the alkalinity, and also lime softening.
I don't know enough about water chemistry to know how to manage the high magnesium, though.
For you, using reverse osmosis water may be the best bet and not the tap water.