In a small bowl, combine the chili powder, cumin, garlic powder, onion powder, black pepper, oregano, paprika, and salt.

Heat a large skillet over medium heat.

Add the ground beef and crumble it with a spatula, breaking it into small pieces.

Cook until the liquid evaporates and the beef begins to release its own fat.

Add the seasoning mixture and stir well. Cook for a couple minutes.

Pour in the water and mix well.

Cook for another minute, then remove from heat.

Place the chopped lettuce, tomatoes, red onion, cheddar cheese, crushed Doritos, Catalina dressing, and taco meat into separate serving bowls.

Let everyone build their own taco salad by adding their desired amount of each ingredient to a bowl.

Drizzle with Catalina dressing and toss before eating.