A substandard housing area defined in the Housing Act of 1949 as any identifiable community that: (1) is in the states of Arizona, California, New Mexico, or Texas; (2) is in an area that is within 150 miles of the border between the United States and Mexico (except for standard metropolitan statistical areas that have a population exceeding 1 million); (3) is designated by the state or county as a colonia; and (4) is determined to be a colonia based on criteria such as lack of potable water supply, lack of adequate sewage systems, and lack of decent, safe, and sanitary housing.