The Health Resources and Services Administration maintains a classification system to assess shortages of oral health care providers in small geographic areas. Scores are allotted out of 26 points, with higher scores indicating greater shortage. Scores are a composite based on the local population to provider ratio, travel distance to nearest provider, poverty level, and presence of fluoridated community water. These Dental Health Professional Shortage Areas may be designated to the entire population living within the area or restricted to certain types of people living there (e.g. migrant workers or low-income people).