Which consequence can arise from improper chemical balance in pool water?

Improper chemical balance in pool water can lead to an increased risk of infections. When the pH, chlorine levels, or other chemical parameters of the pool water are not maintained within the proper ranges, it can create an environment conducive to the growth of harmful microorganisms, including bacteria and viruses. For example, if the chlorine level is too low, it may not effectively sanitize the water, allowing pathogens to thrive. This poses a significant health risk to swimmers, as they may be more likely to contract skin infections, respiratory issues, or other waterborne illnesses. Maintaining proper chemical balance is crucial for ensuring swimmer safety and preventing infections.

The other options suggest outcomes that are less likely to result from improper chemical balance. Improved swimmer comfort, enhanced water clarity, and a decrease in algae growth are all associated with a well-maintained pool rather than one with chemical imbalances.