What is the Maximum Residual Disinfectant Level Goal (MRDLG)?

The Maximum Residual Disinfectant Level Goal (MRDLG) is defined as the level of disinfectant that we consider to be safe for human health, taking into account that there are no known health risks at this level. It sets a target for drinking water disinfection that aims to minimize any potential adverse health effects from disinfectants.

This goal is not an enforceable standard, but rather a guideline established to help ensure safe drinking water quality while balancing the need for effective disinfection. By setting this level below which there is no known health risk, the MRDLG provides a benchmark for water systems to strive toward in their efforts to protect public health while effectively managing the presence of pathogens in drinking water.

In contrast, other choices suggest enforceable limits or ideal targets without establishing the safe threshold for health risk that characterizes the MRDLG. Therefore, option C accurately captures the essence and purpose of the MRDLG.