AWWA Water Treatment Operator Certification Practice Test

Activated carbon is widely used in water treatment primarily for its ability to adsorb impurities and odors. This property stems from the vast surface area and porous structure of activated carbon, which allows it to trap a wide range of contaminants, including organic compounds and chemicals that may affect the taste and smell of water.

The effective adsorption process not only removes unwanted substances from the water, improving its overall quality, but also assists in reducing harmful contaminants that could pose health risks. By binding these impurities onto its surface, activated carbon helps ensure that treated water is safer for consumption and more palatable.

While increasing water pressure, filtering out large particles, and adding essential minerals are important functions in water treatment, they do not align with the primary benefit of activated carbon usage. Its specific function of removing impurities and odors sets it apart as a crucial element in maintaining water quality.