**Preface to "Municipal Wastewater Management"**

This Special Issue of *Sustainability* Journal belongs to the Section of Social Ecology and Sustainability. It was developed by the Journal and was invited to be led through the process of guest-editing, as part of the Journal's growing series of thematic issues.

Under the broad umbrella of its title "Municipal Wastewater Management" eleven peer-reviewed papers were published, covering a wide thematic range of both research and review articles.

The eleven papers form a collection that adds to our understanding of "Municipal Wastewater Management" in ways that would hopefully trigger readers' interest and stimulate colleagues towards advancing their research and overcoming weaknesses and limitations.

All authors are highly acknowledged for contributing to the realization of this Special Issue.

**Charikleia Prochaska** *Editor*
