AWWA Water Treatment Operator Certification Practice Test 2026 - Free Practice Questions and Study Guide

The common health risk associated with poorly treated water is waterborne diseases. These diseases are caused by pathogenic microorganisms that can be present in water that has not been adequately treated or disinfected. Sources of these pathogens can include bacteria, viruses, and parasites, which can lead to illnesses such as cholera, dysentery, and gastroenteritis. When water treatment processes fail to effectively remove or kill these harmful organisms, individuals consuming the water are at a significant risk of infection and various health complications.

While water temperature changes, high mineral content, and increased water pressure can affect water quality and usage, they do not directly lead to the same immediate health risks as waterborne diseases. The focus on pathogen removal and water treatment is critical in public health to ensure safe drinking water and to prevent disease outbreaks in communities.