Slow cooker enchiladas

1 lb ground beef
1 C chopped onion
1/2 C chopped green pepper
1 (16 oz) can kidney beans, rinsed and drained
1 (16 oz) can black beans, rinsed and drained
1 (10 oz) can diced tomatoes w/ green chilies
1/3 C water
1 tsp chili powder
1/2 tsp cumin
1/2 tsp salt
1/2 tsp salt
1/2 tsp pepper
2 C Monterrey jack cheese
1 C cheddar cheese
6 tortillas

In skillet, brown beef, peppers and onions until cooked. Drain and return to pan. Add remaining ingredients except cheese and tortillas. Bring to boil.
In crockpot, layer tortilla, beef mixture, cheese, and repeat as needed
Cook on low 5-7 hours