Numerous chemicals, such as DBPs, disinfectant residuals, and heavy metals can appear in drinking water, deteriorating water quality and affecting public health . Therefore, monitoring and controlling those chemicals are essential to ensuring drinking water quality. Conventional approaches to assess, monitor, and/or control chemicals can be time-consuming, inaccurate, and costly. ML opens a promising venue for monitoring and ensuring chemical drinking water quality. This section complies the applications of ML to assess and control chemicals in drinking water with a focus on engineered water systems (Table ).