What classification would IDEM give to a water treatment system that adds Chlorine for disinfection?

The classification given by the Indiana Department of Environmental Management (IDEM) to a water treatment system that adds chlorine for disinfection is WT2. This classification indicates that the water treatment system is engaged in more than just basic water treatment and includes the addition of a disinfectant, which is a crucial aspect for ensuring the safety and potable quality of the drinking water supply.

WT2 classification specifically pertains to those treatment facilities that incorporate advanced treatment processes, which include disinfection methods such as chlorination, to eliminate harmful pathogens from the water. This classification is essential for operators as it reflects the complexity and the regulations governing the treatment processes that they must follow to ensure compliance with safety standards.

The other classifications listed—WT1 and WT5—correspond to different capacities and types of water treatment systems, with WT1 typically corresponding to systems that may not involve disinfection or require less operational complexity. DSS (drinking water security system) refers to systems focusing more on the security measures rather than treatment processes. Therefore, WT2 is the appropriate classification for a chlorine disinfection treatment system, highlighting its role in providing safe drinking water.