Wastewater Treatment Operator Certification Practice Test

What is the primary goal of wastewater treatment?

1. To reuse wastewater for irrigation

2. To remove pathogens and pollutants

3. To reduce the volume of wastewater

4. To convert solids into gases

The correct answer is: To remove pathogens and pollutants

The primary goal of wastewater treatment is to remove pathogens and pollutants from the water before it is released back into the environment or reused. Wastewater contains various contaminants, including harmful microorganisms, organic materials, nutrients, heavy metals, and chemicals that can pose risks to human health and the ecosystem if not adequately treated. The treatment process typically involves several stages, including physical, chemical, and biological methods, to ensure that the effluent meets regulatory standards for safety and cleanliness. By effectively addressing these contaminants, wastewater treatment protects public health, restores water quality, and helps maintain ecosystem balance. While other options may represent valuable aspects or effects of the wastewater treatment process—such as facilitating reuse or volume reduction—the primary focus remains on the removal of harmful substances to safeguard health and the environment.