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Determining water quality can be difficult due to the presence of various contaminants (such as chemicals, heavy metals, and pathogens) in water sources, which can be present in different concentrations and combinations. Additionally, natural variations in water composition, seasonal changes, and the presence of pollutants from various sources can complicate water quality assessment. Analyses of water quality parameters require specialized equipment and expertise, making it challenging to obtain accurate and comprehensive assessments.

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Q: Why is it difficult to determine levels of water quality?
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