What is the Primary MCL for copper, which can lead to organ issues?

The Primary Maximum Contaminant Level (MCL) for copper is established at 1.3 mg/l. This standard is set to protect public health by limiting exposure to copper, which can lead to adverse health effects when present in drinking water at elevated levels. Copper can cause gastrointestinal distress as well as more severe health impacts if ingested in larger amounts over time, potentially leading to organ issues such as liver and kidney damage.

The regulation aims to ensure that municipal water systems remain safe and compliant for consumers, thereby safeguarding their health from potential toxicity. The established level of 1.3 mg/l encapsulates the balance between allowing beneficial copper, which is essential in trace amounts for human health, and minimizing risks associated with higher exposure.