Regulation – From mistrust to strict oversight
Technique and management of the not collective purification - Regulations and pretreatment

A regulatory overhaul took place starting in 1980. This technical approach is, in fact, unavoidable, as individual sanitation systems cover a considerable portion of the population. In 1984, the Department of Agriculture estimated that 30% of the population in rural communities, or approximately 9 million people at the time, used this sanitation technique.

Furthermore, the development of individual housing in suburban areas could only be achieved if sanitation systems were not too expensive.

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