Prepare for the American Water Works Water Treatment Plant Operator Test. Study with multiple choice questions, each with hints and explanations. Get ready to excel!

Multiple Choice

MCL stands for which term in water quality standards?

Maximum contaminant level is the highest concentration of a contaminant allowed in finished drinking water that a public water system can deliver to customers, and it is enforceable under drinking water regulations. The limit is set to protect public health while considering how feasible it is to remove the contaminant with available treatment and the associated costs. MCLs are expressed in units like mg/L (ppm) or µg/L (ppb), depending on the contaminant. For context, there is also an MCL goal (MCLG), which is a health-based target that isn’t enforceable; typically the MCLG is at or below the MCL to ensure protection.

Maximum contaminant level is the highest concentration of a contaminant allowed in finished drinking water that a public water system can deliver to customers, and it is enforceable under drinking water regulations. The limit is set to protect public health while considering how feasible it is to remove the contaminant with available treatment and the associated costs. MCLs are expressed in units like mg/L (ppm) or µg/L (ppb), depending on the contaminant. For context, there is also an MCL goal (MCLG), which is a health-based target that isn’t enforceable; typically the MCLG is at or below the MCL to ensure protection.