The 2018 Chlor-Alkali Mercury Liquid Effluent Regulations (CAMLER) in Canada are designed to reduce the amount of mercury that is released into the environment as a result of the chlor-alkali industry. The regulations place obligations on businesses that manufacture or import chlor-alkali products. Under CAMLER, businesses must limit the amount of mercury that is present in their effluent to a maximum concentration of 0.001 mg/L. They are required to monitor and report on their effluent levels, and to implement measures to ensure that their operations do not result in mercury releases that exceed regulatory limits. Businesses must also conduct environmental risk assessments to identify potential risks to the environment and human health, and to develop and implement risk management plans to mitigate these risks. They are required to notify the government of any significant environmental releases of mercury, and to implement measures to prevent future releases. In addition to these regulatory requirements, businesses are encouraged to adopt best practices for mercury management, such as implementing mercury-free technologies and processes, and recycling and reusing mercury where possible.