What do MCLs primarily relate to?

Maximum Contaminant Levels (MCLs) are regulatory standards set by the Environmental Protection Agency (EPA) that specify the highest permissible levels of particular contaminants in drinking water. These levels are primarily established to protect public health. MCLs are based on health effects studies that identify the potential risks associated with exposure to various waterborne contaminants, ensuring that the water supplied is safe for human consumption.

The determination of MCLs involves evaluating the relationship between certain pollutants and their adverse health effects, which can include acute and chronic illnesses, developmental effects, and other health risks. By establishing these limits, authorities aim to minimize the health risks associated with consumption of contaminated water, thereby safeguarding the well-being of the public.

Understanding that MCLs focus primarily on health is crucial for water operators in managing and treating drinking water supplies to comply with regulatory standards and protect consumers.