Which MCL is specifically noted to prevent the risk of Blue Baby Syndrome?

The choice of nitrate as the MCL specifically noted to prevent the risk of Blue Baby Syndrome is correct due to the health risks associated with elevated levels of nitrate in drinking water, especially for infants under six months old. When nitrate is consumed in high amounts, it can be converted to nitrite in the body, which interferes with the blood’s ability to carry oxygen, leading to a condition known as methemoglobinemia, or Blue Baby Syndrome. This syndrome is characterized by a bluish tint to the skin due to insufficient oxygen in the bloodstream, which can be life-threatening.

The MCL for nitrate is established to protect vulnerable populations, such as infants, from these serious health effects, highlighting the importance of monitoring and regulating nitrate levels in drinking water sources. This regulation is critical as infants are more susceptible to the effects of nitrates compared to older children and adults, who typically have a more developed system for processing nitrates.

Understanding the specific impact of nitrate on infant health underscores the rationale behind its maximum contaminant level, as well as the need for rigorous water quality testing to ensure safe drinking water.