What is the maximum contaminant level for Total Trihalomethanes in drinking water?

The maximum contaminant level (MCL) for Total Trihalomethanes (TTHMs) in drinking water is set at 0.1 mg/l. This standard is established to protect public health from potential adverse effects that may arise from the consumption of these disinfection byproducts. TTHMs are formed when chlorine or other disinfectants used in water treatment react with naturally occurring organic matter in water. Given the potential health risks associated with long-term exposure to TTHMs, including links to cancer and other serious health issues, regulatory agencies set this limit to ensure that levels remain low enough to mitigate these risks. Adhering to the MCL helps protect consumers and maintain safe drinking water standards.