Which of the following indicates inadequate sanitation in a pool?

The indication of inadequate sanitation in a pool is represented by cloudy water. Cloudy water typically suggests that contaminants, such as bacteria or organic matter, are present and that the water is not being properly sanitized. This cloudiness often occurs when the disinfectant levels are insufficient to kill pathogens and maintain clear water, which is a crucial aspect of pool sanitation.

In contrast, clear water is a sign of adequate sanitation, as it suggests that the water has been effectively treated and is free from visible contaminants. Stable chemical readings indicate that the pool’s chemical levels, such as chlorine or pH, are within the recommended ranges, supporting proper sanitation. Moreover, the absence of algae growth is also a positive sign, indicating effective sanitation measures that prevent algae from thriving. Therefore, cloudy water serves as a clear indicator of inadequate sanitation practices in the pool.