What is the Action Level for Copper in drinking water?

The Action Level for Copper in drinking water is set at 1.3 mg/L. This standard is established by the EPA under the Lead and Copper Rule, which aims to minimize the risks associated with lead and copper in drinking water. If the concentration of copper exceeds this threshold in more than 10% of tap water samples collected at customers’ homes, it indicates potential corrosion of copper pipes, which can pose health risks, particularly to infants and pregnant women. Therefore, maintaining copper levels at or below this Action Level is essential for ensuring safe drinking water quality and protecting public health.