Water is a valuable resource, but also a very scarce one. Therefore, the circular economy plays a fundamental role in preserving water resources through water reclamation. The result of this process is reclaimed water, i.e., water that has been treated and subjected to an additional treatment process to ensure that it’s up to quality for its intended use, and can therefore be reused. The uses of reclaimed water are very varied. It can be used for urban, industrial, or agricultural purposes, among others.