415 ILCS 5/13.2
At the request of the owner or user of a private well, the Agency shall provide for annual testing of water from private wells located within 1/2 mile of any active or inactive sanitary landfill or hazardous waste disposal facility at no charge to the owner of the well.
Before obtaining a sample for testing, the Agency shall, not less than 5 business days prior to obtaining the sample, notify the owner or operator of the sanitary landfill or hazardous waste disposal facility of the opportunity to obtain a split sample and specify the sampling procedure, testing procedure and analytical parameters to be evaluated.
Sample collection shall be conducted in cooperation with the Illinois Department of Public Health and the recognized local health department, where one exists, in whose jurisdiction the well is located. The Illinois Department of Public Health and the local health department shall be provided with a written report of results upon completion of sample testing.
415 ILCS 5/13.2