Non-collective sanitation systems techniques and management - Treatment schemes of domestic wastewater

Due to its low population density and the nature of its settlements, France has long had—and will continue to have—a large proportion of its population connected to on-site wastewater treatment systems, also known as autonomous wastewater treatment systems, whether they serve single-family homes or groups of homes.

Ensuring high-quality standards for on-site wastewater treatment through a local public service is essential, on the one hand, to prevent the risks of nuisance and pollution, and, on the other hand, to ensure a certain level of equity in access to public wastewater services, whether centralized or decentralized.

In this article, we will provide an overview of the current state of the art regarding the various techniques available, including some that can only be used with special permission from prefectural authorities or local municipalities. We will discuss the responsibilities of the Public Service for On-Site Wastewater Treatment (SPANC) in a separate article.

There are numerous and very specific best practices for preventing nuisances. We will cover them as comprehensively as possible for the various techniques currently authorized.

This article is part of a trilogy on on-site wastewater treatment. Readers may find it helpful to consult the other two articles by the same author. They are listed in the “Further Reading” section, under “Articles to Read” in our database.