What is the MCL established for total THMs (TTHM) under Stage 1 DBPR?

The Maximum Contaminant Level (MCL) for total Trihalomethanes (TTHM) established under Stage 1 of the Disinfection Byproducts Rule (DBPR) is set at 0.08 mg/L. This standard was implemented to protect public health by limiting the amount of these contaminants in drinking water. TTHMs are a group of chemicals that can form when chlorine reacts with organic material in water during the disinfection process, and their presence at elevated levels has been associated with potential health risks, including an increased chance of bladder cancer and problems with the liver, kidney, and central nervous system.

Setting the MCL at 0.08 mg/L reflects an effort to manage and minimize exposure to these harmful compounds while providing safe drinking water. It's important for water treatment facilities to monitor and manage TTHM levels to ensure compliance with regulatory standards and protect consumer health.