Rinse chicken pieces. In a large kettle, combine chicken pieces and the 2 quarts water. Cover; bring to boiling. Add carrots, onion, celery, parsley, garlic, salt, and pepper. Heat to boiling; reduce heat. Cover and simmer for 1 hour or until chicken is very tender. Reserve meat from chicken pieces for another use; discard vegetables. Strain broth and skim off any fat.