Tracey, we keep bees on a nine acre small farm. I checked with all the folks up and down our road to find out if any of them had problems with bee keeping. None did, but if just one had a family member that was truly allergic (not just sensitive) to a bee sting, we would have given up the idea.
Honey bees forage for nectar and pollen in a three mile circle from their hive. They don't drink from a water source close to the hive--they like to drink farther away, up to a mile.
Planting to attract bees will get you someone else's bees to pollinate in your garden. We plant borage, zinnias, lavender, and the bees love squash blossoms! Our ladies aren't all that interested in our garden flowers, but do use them occasionally. We do get a lot of other pollinators, including wasps.
If you get bees, I highly recommend you get a starter kit of Italian bees. They are sturdy, non-aggressive, and are easier to keep than some other breeds. Getting started in bee keeping is expensive--full suit for the beekeeper, two hives with supers, bottom boards, and a good book on beekeeping. Our original set-up cost about $400, and then we also invested in an extractor for the honey.