[sandesoils]

We had a built in pool in back yard that girls had to fly over top of to get to hives, located in back corner. Every time I walked by pool I had long sticks ready to fish them out. Even though they may look dead, they aren't, even after being in water an hour. Then after drying off and revived would continue on their way.
After awhile I covered the pool with a shade cloth screen. They can use the screen for getting water, and not drowning in the process.

 

[sandesoils]

Why chlorinate the water? Bird baths are fine in shade. A large, flat landing rock is good. Bees like cool, 'old' water, mud puddles, and dew off grass. Not chlorinated water.