Sweet Potato Corn Chowder

Name: Sweet Potato-Corn Chowder
Ingredients: 6 slices bacon, diced; 1 medium onion, chopped; 1 cup frozen whole kernel corn; 1⁄2 cup sweet red pepper, chopped; 1⁄2 cup leek, chopped; 1 teaspoon fresh thyme, chopped; 1 teaspoon fresh marjoram, chopped; 2 sweet potatoes, peeled and chopped; 2 1⁄2 cups water; 1 (14 1/2 ounce) can chicken broth; 2 teaspoons cornstarch; 1⁄2 cup cold water; 1⁄2 cup heavy whipping cream; salt, to taste; black pepper, freshly ground, to taste