Texas Commission on Environmental Quality (TCEQ). Class C Water License Exam

Chlorination of water specifically helps to eliminate what type of contaminants?

1. Organic chemicals

2. Physical impurities

3. Microbial pathogens

4. Heavy metals

The correct answer is: Microbial pathogens

Chlorination of water is primarily utilized to eliminate microbial pathogens, such as bacteria, viruses, and protozoa that can cause waterborne diseases. This process involves the addition of chlorine or chlorine compounds to water, which effectively destroys the cell walls of these organisms and renders them inactive. While chlorination can have some effects on certain organic chemicals, physical impurities, and heavy metals, its main function is to disinfect and ensure the safety of drinking water by targeting harmful microorganisms. Therefore, when considering the specific purpose of chlorination in water treatment, the focus is on its ability to address microbial contamination, making it the correct response in this context.