Auxiliary Source is described as water that is not drinking water. Which option best completes this statement?

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!

Auxiliary Source refers to water used for purposes other than drinking, so it is non-potable by definition. The completion “Not drinking water” directly matches this idea, signaling water that isn’t intended for consumption and is used for non-potable tasks (like cooling, washdown, or boiler makeup). The other options point to types of drinking water or specific water qualities and don’t convey the general non-potable role that an auxiliary source represents.