What is considered a secondary purpose of treating drinking water?

The secondary purpose of treating drinking water is to produce water that is aesthetically pleasing, which often means ensuring that it is clear and has a good taste. While water treatment primarily focuses on removing contaminants to safeguard health, improving the visual and palatable qualities of water also plays an important role in consumer acceptance and satisfaction. Clear and tasty water helps convince consumers of its safety and quality, thus encouraging them to drink enough water for proper hydration and overall health.

While the other options may have significance in the broader context of water treatment and management, they do not fit the role of secondary purposes as clearly as the goal of producing aesthetic quality. For instance, reducing environmental impact and lowering chemical usage are more aligned with primary goals aimed at sustainability and safety, whereas improving infrastructure falls into the realm of system efficacy rather than treatment outcomes. These aspects can enhance the overall water supply but do not directly relate to the immediate result of treating water itself for aesthetic appeal.