What is meant by Maximum Contaminant Level (MCL)?

Maximum Contaminant Level (MCL) refers specifically to the highest amount of a contaminant that is allowed in drinking water as set by regulatory agencies, such as the Environmental Protection Agency (EPA). This standard is designed to protect public health by ensuring that drinking water remains safe for consumption. MCLs are based on health effects and are crucial for maintaining the quality of drinking water.

In contrast, other options provide different contexts that do not accurately represent the MCL. For instance, the level of disinfectant required for safety focuses on treatment processes and does not encompass all contaminants. The goal level of contaminants in water treatment processes and the legal limit for water usage in municipalities address separate regulatory measures and operational thresholds rather than the specific permissible limits established for drinking water safety.