Which of the following statements is correct regarding turbidity?

• A. It is a measure of the electrical conductivity of water
• B. It represents the presence of dissolved oxygen in water
• C. It affects the visibility and quality of water
• D. It is a method for assessing water temperature

Answer: (C)

Turbidity is a measure of the cloudiness or haziness of a liquid, which is often caused by suspended particulate matter, such as sediments, algae, or microorganisms. This characteristic directly impacts the visibility and quality of water. When water has high turbidity, it can obstruct light penetration, affecting aquatic plant photosynthesis and disrupting ecosystems. Furthermore, increased turbidity can carry pathogens and toxins, making the water less safe for human consumption and swimming.

This understanding of turbidity highlights its critical role in water quality assessment, as it not only influences aesthetic factors but also has significant ecological and health implications. The other options, although related to water quality, do not accurately describe turbidity. For example, turbidity is not a measure of electrical conductivity, does not indicate dissolved oxygen levels, and is unrelated to assessing temperature.