Illinois Mandates Fluoridation state-wide:

"The Illinois Department of Public Health, Oral Health Division, reports that statewide data concerning the
oral health needs of school age children has not been collected since 1993/1994. That study, “The Oral Health
Status of Illinois Children”, indicated that 54% of children had caries in primary or permanent teeth, and 23%
had caries in permanent teeth. Another finding indicated that 38% of 6-8 year olds had untreated dental caries
and 30% of 15 year olds had untreated dental caries."