What is the maximum contaminant level (MCL) for iron in drinking water?

The maximum contaminant level (MCL) for iron in drinking water is set at 0.30 mg/L. This standard is established to prevent adverse health effects and ensure that water remains aesthetically acceptable. Iron, while not generally harmful at low levels, can lead to issues like staining of laundry and plumbing fixtures, and it can impart a metallic taste to water at higher concentrations. Maintaining the MCL at this specific concentration helps ensure that water providers can deliver safe and palatable drinking water to consumers.