Actively watch your dog anytime they are around a pool and unable to exit on their own.
Make it easy for dogs to get out with pet ramps or textured pool steps.
Have your dog wear a flotation device to prevent drowning if they fall in.
Fence your pool on all sides to restrict access without supervision.
Use safety pool covers and make sure they are fully secured when not in use.
Install and routinely test pool alarms that detect unsupervised entry.
Teach cues like "off" or "leave it" to reinforce staying away from the pool.