Heat oil in a skillet over medium heat. Add turkey, break apart, and cook until browned. Stir in water and taco seasoning and let simmer for a few more minutes until bubbling. Turn off heat and let cool slightly.

Place an even amount of taco meat in the center of each lettuce leaf, top with salsa, and serve.

Meal prep note: store any leftover meat in an airtight container in the refrigerator. When ready to eat, reheat meat and assemble tacos.