What is the MCL for haloacetic acids (HAA5) in drinking water?

The maximum contaminant level (MCL) for haloacetic acids (HAA5) in drinking water is set at 0.060 mg/L. This standard has been established to protect public health, as HAA5 is a group of disinfection byproducts that can form when chlorine reacts with naturally occurring organic matter in water. The regulation of HAA5 is important because excessive levels can pose health risks, including potential links to cancer.

Understanding the significance of this value also emphasizes the importance of monitoring and regulating disinfection byproducts in water treatment processes. Adherence to the MCL ensures that water utilities provide safe drinking water to their customers while maintaining compliance with health guidelines.

The other levels provided do not align with the established MCL for HAA5, indicating that they would permit higher levels in drinking water, potentially leading to health risks associated with increased exposure to disinfection byproducts.