Wastewater treatment is an essential process that plays a crucial role in protecting public health and the environment. It involves the removal of harmful contaminants from wastewater before it is released back into the ecosystem. Proper treatment of wastewater helps prevent the spread of waterborne diseases and reduces the risk of pollution in our rivers, lakes, and oceans. Furthermore, in addition to protecting human health, wastewater treatment also helps preserve the health of aquatic ecosystems and the plants and animals that rely on them. But the topic of wastewater and its treatment is complex and often involves different areas of knowledge, from chemistry to mechanical engineering. This DARROW wastewater glossary is a collection of relevant terms revolving around the topic of wastewater. It includes terms related to water treatment, measuring units, techniques, and the different properties of water. Keep reading and dive into the world of wastewater treatment!