Economic Impact Study of Proposed Amendments to Illinois Administrative Code 604.203 and 605.104 of Subtitle F Public Water Supplies (Trihalomethanes) R84-12

摘要

In October of 1982, the Illinois Pollution Control Board (IPCB), conforming to federal regulations, adopted a regulatory program to protect individuals from Trihalomethanes (THM) in drinking water. The program included establishing a Maximum Allowable Concentration (MAC) of 0.1 mg/1 and further provided for a systematic monitoring program. As then adopted, the program only affected public water supplies (PWS) which served more than 10,000 individuals. In May of 1984, the IPCB's proposed rule change and the alternative proposal introduced by the Illinois Environmental Protection Agency. The report discusses proposed monitoring strategies for the identified impacted communities, including cost and operational considerations, a review of control technologies, their benefits and problems and direct costs is also provided. The cancer incidence rate in animals was extrapolated to project an estimated number of human cancer cases occurring in Illinois for different THM concentrations.