High Sierra Pool Operator Practice Exam 2025 - Free Pool Operator License Practice Questions and Study Guide

An excessive level of total dissolved solids (TDS) can indicate poor water quality and inefficiency in sanitation. TDS refers to the concentration of dissolved substances in the water, which can include various chemicals, minerals, and organic matter. When TDS levels are high, it often suggests that the water is contaminated with unwanted substances that can affect both the safety and aesthetic quality of the pool water.

High TDS levels can hinder the effectiveness of sanitizers, like chlorine, making it difficult to maintain proper sanitation standards. This inefficiency can lead to increased risk of algae growth and other water quality issues. Therefore, monitoring and controlling TDS is critical for ensuring the overall health of the pool environment.

In contrast, high water temperature does not necessarily correlate with TDS levels, and an effective chemical balance would generally be indicated by manageable TDS levels. Clarity of water may also not directly reflect TDS levels, as clarity can be affected by other factors, such as filtration and circulation, independent of TDS concentrations.