Which contaminant has a Maximum Contaminant Level (MCL) of 0.010 mg/L?

Which contaminant has a Maximum Contaminant Level (MCL) of 0.010 mg/L?

• A. Nitrite
• B. Nitrate
• C. Arsenic
• D. Fluoride

Answer: (C)

The Maximum Contaminant Level (MCL) for certain substances is set to safeguard public health by minimizing exposure to contaminants in drinking water. In the case of arsenic, the established MCL is indeed 0.010 mg/L. This regulation is set due to arsenic's known carcinogenic properties and its potential to cause various health issues when consumed above the threshold levels. Nitrate and nitrite both have different MCLs; for example, the MCL for nitrate is much higher, set at 10 mg/L, while nitrite has an MCL of 1 mg/L. Fluoride also carries a different MCL, which is typically set at around 4 mg/L. Understanding these levels is crucial for water treatment professionals, as it guides them in monitoring and treating drinking water to ensure it meets safety standards. Thus, the correct identification of arsenic at an MCL of 0.010 mg/L is vital for compliance with health regulations and for the protection of public health.

The Maximum Contaminant Level (MCL) for certain substances is set to safeguard public health by minimizing exposure to contaminants in drinking water. In the case of arsenic, the established MCL is indeed 0.010 mg/L. This regulation is set due to arsenic's known carcinogenic properties and its potential to cause various health issues when consumed above the threshold levels.

Nitrate and nitrite both have different MCLs; for example, the MCL for nitrate is much higher, set at 10 mg/L, while nitrite has an MCL of 1 mg/L. Fluoride also carries a different MCL, which is typically set at around 4 mg/L. Understanding these levels is crucial for water treatment professionals, as it guides them in monitoring and treating drinking water to ensure it meets safety standards. Thus, the correct identification of arsenic at an MCL of 0.010 mg/L is vital for compliance with health regulations and for the protection of public health.