6. Conclusion

Technical solutions exist for an alternative to "all collective" sewerage. They can provide a lasting, reliable solution for areas where, for economic or technical reasons, it is inappropriate to lay a wastewater collection pipe.

In addition to "classic" non-collective sanitation techniques involving water purification using natural or reconstituted soil, in 2009 France opened up to purification systems based on principles similar to those used in wastewater treatment plants, or using compact filters. The first approvals were issued in 2010. This could reshape practices in the field of non-collective sanitation.