"Impact Positif" Podcast (LCI / TF1 Info) · April 7, 2025 · Interview conducted by Sylvia Amicone, article by Geoffrey Lopes

On LCI’s “Impact Positif” podcast, Sylvia Amicone interviews Thibault Lamarque, founder of Castalie, to explore our water consumption habits. Given the 16 billion plastic bottles in circulation each year in France, the entrepreneur advocates for microfiltered tap water and positions water as a common good that must be preserved. The discussion touches on health issues, plastic pollution, and collective responsibility.

Key takeaways

  • Thibault Lamarque founded Castalie 2011 to design sustainable, eco-friendly water fountains for businesses, with the goal of eliminating pollution from single-use plastic water bottles.
  • Castalie it has installed more than 7,000 water fountains at 3,000 partner companies across several countries, helping to prevent the use of more than 400 million plastic bottles.
  • In France, a bottle of water travels an average of 800 km from its source to a restaurant table, while global production totals approximately 350 billion bottles per year.
  • According to Thibault Lamarque, bottled water contains microplastics and PFAS, while only 10 to 25 percent of discarded plastic bottles actually end up in a recycling program in France.
  • Castalie water fountains Castalie tap water and bottle it on-site in glass bottles, removing chlorine, particles, and any heavy metals to produce pure, neutral-tasting water.
  • In 2025, Castalie the Social and Environmental Solidarity Enterprise Award.
  • Thibault Lamarque advocates for the “polluter pays” principle and points out that water—shared by the public, businesses, and industrial entities—is a common good that cannot be polluted with impunity.
  • In his essay *Humanity Is Thirsty and the Whales Are Drowning*, Thibault Lamarque calls for individual and entrepreneurial action, arguing that we cannot expect politicians to solve everything.

Source: LCI / TF1 Info, "Impact Positif" podcast, April 7, 2025 — interview conducted by Sylvia Amicone, article by Geoffrey Lopes. Listen to the original podcast

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