Preheat oven to 350.
Cook beef in a sauce pan over medium heat until no longer pink. Drain and then stir in taco seasoning and water. Bring to a boil, then reduce heat and simmer, uncovered, for 10 minutes. Set aside.
Place crusts on ungreased pizza pans or baking sheets. Combine beans and salsa; spread over crusts. Top with beef mixture, chips and cheese.
Bake at 350° for 13-16 minutes or until cheese is melted.