Sorry for very late reply!
I have some plastic pans with gravel in them about 20 feet in front of the hives. I have to refill them 2 or 3 times a day depending on the temperature. There are always bees in there.
We have a kiddy splash pool in our pasture. We get lots of bees sharing the pool with our alpacas.
My neighbors tell me they get our bees at their bird baths.
On very hot days (above 90), I put golf umbrellas out to shade the hives. I zip tie the umbrella to a shovel and put the shovel in the ground in a good position to keep direct sun off the hives. I feel that that helps them keep it a little cooler and reduce the need to get so much water. Absolutely no scientific proof that this does any good, but it feels like the right thing to do!
Let me know if you want some pictures.
Charlie