Illinois Department of Public Health expands high-risk lead testing areas to 1,200 ZIP codes in 60 counties.

Illinois Department of Public Health (IDPH) added 148 ZIP codes to high-risk lead testing areas, raising the total to nearly 1,200 in 60 counties. Under Illinois law, children in high-risk areas must be tested at 12, 24, and 36 months, while those six years old and younger require a pediatrician-administered questionnaire. The department aims to implement universal lead testing across all Illinois ZIP codes by 2026.