Wastewater treatment is an important aspect of keeping a community safe and healthy. Currently nearly 1/3 of the worlds population does not have access to sanitation services. In addition, 1.2 billion people worldwide do not have access to safe drinking water (UN, 2008). As a result of these two conditions over 5,000 people die every day due to waterborne illnesses.
Wastewater treatment prevents and contains waterborne illnesses. This section reviews the main components of wastewater treatment: