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<p>This study aimed to assess the feasibility of a participatory experiment involving residents of a Paris district, in which their dietary habits were monitored through the analysis of chemicals in wastewater. Unlike conventional sociological metrics, wastewater can be used to monitor the behavior of the entire population, regardless of their participation, with an almost 100% response rate. The results revealed changes in the chemistry of wastewater during the experimental week, when residents were encouraged to consume “more fruits and vegetables.” A key challenge lies in understanding the possible influence of confounding factors that could affect the chemical dynamics and thus impact the results. These factors were also evaluated. For the first time, wastewater has demonstrated its potential as a monitoring medium for participatory experiments addressing issues of diet and health, which are critical components in shaping the trajectory of sustainable urban living for the future.&#xa0;</p>

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Using Wastewater to Monitor Suggested Changes in Dietary Intake: A Participatory Experiment

  • 期刊论文

  • 发表日期：

    2025年7月25日

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  • Thomas Thiebault,
  • Catherine Carré,
  • Gauthier Bernier-Turpin,
  • Camille Asselin,
  • Anne-Fleur Barfuss,
  • Nada Caud,
  • Jérémy Jacob

摘要

This study aimed to assess the feasibility of a participatory experiment involving residents of a Paris district, in which their dietary habits were monitored through the analysis of chemicals in wastewater. Unlike conventional sociological metrics, wastewater can be used to monitor the behavior of the entire population, regardless of their participation, with an almost 100% response rate. The results revealed changes in the chemistry of wastewater during the experimental week, when residents were encouraged to consume “more fruits and vegetables.” A key challenge lies in understanding the possible influence of confounding factors that could affect the chemical dynamics and thus impact the results. These factors were also evaluated. For the first time, wastewater has demonstrated its potential as a monitoring medium for participatory experiments addressing issues of diet and health, which are critical components in shaping the trajectory of sustainable urban living for the future.