My rabbit discovered that the pool in our backyard has water in it. She figured out a way to drink it. My family put a rock so she can better reach the turtle pool. I'm curious to know if the water from the turtle and fish pool is safe for the rabbit to drink.
Turtles carry salmonella as well as other bacteria that can be harmful to your rabbit, both animals carry very different gut flora.
Rabbits are so so sensitive with their GI tract, that's like the #1 issue we see in clinic (GI stasis, diarrhea, hairballs etc..), an imbalance can be disastrous.
I'm sure a few drinks isn't going to be a problem but ideally fresh water is preferred.
My first thought is it should be fine. Rabbits eat poop so a bit of bacteria is probably not going to be an issue. My bigger concern would be fleas and parasites. For anybunny that gets to spend sometime outside I recommend Revolution see How accurate does the 30 day span when applying revolution flea treatment need to be?