Yes! BUT, you need to treat it before you drink it. If you have a chlorine pool it's good to have some chlorine test strips on hand - they'll tell you the level of chlorine in the water and if it's safe to drink. If it's less than 3ppm it should be ok. You probably already know this, but it's not recommended to drink salt water - so if your pool is maintained by salt water, you shouldn't drink it.
The best way to make pool water drinkable is to put it through a purifier. One of the most recommended filters I can find is a USA Berkley Filter.