Certainly! The water is totally drinkable in all the Mayan Resorts. In addition all the tourist area restaurants use filtered water. DO NOT LET WATER FEARS prevent you from enjoying Mexico.

However when you travel to areas like the Mayan ruins or up into the mountains in Puereto Vallarta you should buy bottles of water on site. Make sure it is still sealed. Otherwise COKE (without ice) or beer are safe to drink. We have written a more extensive blog post on water in Mexico that may be helpful.