Water Treatment OIT Practice Test 2025 – Complete Exam Prep

A common source of excessively clear water in a collection system is high water table infiltration. When the water table is high, it can lead to an increased amount of groundwater infiltrating the collection system, particularly in areas where the soil is permeable. This infiltration results in water that is typically clear since it has not undergone the degradation processes that might cause turbidity or contamination, such as sediment resuspension or organic matter breakdown.

In contrast, excessive recirculation often pertains to water already treated, and while it can impact water quality, it does not specifically lead to an influx of excessively clear water from outside sources. Similarly, exfiltration from a high water table usually indicates water flows out of the system rather than into it, while faulty plumbing might introduce contaminants or cause leaks, which can adversely affect water clarity. Thus, high water table infiltration is the primary driver of clear water influx in this context.