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

The maximum contaminant level (MCL) for iron in drinking water is set at 0.30 mg/l. This value is established by the Environmental Protection Agency (EPA) and is based on aesthetic concerns, primarily related to the color and taste of drinking water, rather than direct health risks. Elevated levels of iron in water can lead to noticeable discoloration and staining and may affect the overall palatability of the water. Regulatory limits help ensure that water treatment facilities can manage iron levels adequately to reduce these aesthetic issues, ensuring water remains pleasant for consumption.