Place chicken, tomatoes, enchilada sauce, onion, green chiles, and garlic into a slow cooker.
Pour in water, and chicken broth, season with cumin, chili powder, salt, pepper, and bay leaf.
Stir in corn and cilantro.
Cover, and cook on low setting for 6 to 8 hours, or on high setting for 3 to 4 hours.
Serve with tortilla chips if desired.