What does "MCL" stand for in drinking water regulations?

"MCL" stands for Maximum Contaminant Level, which is a critical term in drinking water regulations. The MCL is the highest permissible level of a contaminant in drinking water, as set by the Environmental Protection Agency (EPA) under the Safe Drinking Water Act. This regulation ensures that public health is protected by limiting the exposure to various harmful substances found in water supplies.

The establishment of MCLs is based on health risks, detection methods, and the feasibility of treatment technologies, and they encompass a wide range of contaminants, including microorganisms, disinfectants, inorganic chemicals, organic chemicals, and radionuclides. By adhering to MCL standards, water systems can help safeguard public health and ensure the safety of drinking water for consumers.