In 2023, an estimated 68.5% of the population in France was connected to urban and other tertiary wastewater treatment plants. The projected trend from 2024 to 2028 shows a gradual increase, with an annual growth rate of approximately 0.35%. The year-on-year percentage variation remains stable, reflecting a slow but steady enhancement in wastewater treatment infrastructure. The five-year compound annual growth rate (CAGR) is approximately 0.42%, indicating a modest but sustained improvement in connectivity.

Future trends to watch include:

Implementation of advanced technologies in wastewater treatment to accommodate rising urban populations.
Policies aimed at achieving higher environmental standards and public health outcomes.
Potential investments and innovations in sustainable water management practices.