Since 2019, the Agglomeration Community has been collaborating with Atmo Nouvelle-Aquitaine to annually assess the presence of phytosanitary products in the air of the Plaine de l'Aunis. The study conducted in the autumn of 2025 detected several substances, primarily herbicides commonly used in local agriculture, such as prosulfocarb and pendimethalin. Concentrations vary depending on the geographical areas.
Molecules for which agricultural use is banned were also identified, like lindane, albeit at very low levels, close to detection limits.
The complete results of this monitoring are available on the Atmo Nouvelle-Aquitaine website. They will also be shared during three public meetings dedicated to the affected municipalities: on Monday, October 5th in Saint-Vivien (6:30 PM), Tuesday, October 6th in Montroy (6:30 PM), and Wednesday, October 7th in L’Houmeau (6:30 PM).
