Sorry for posting an article in French but I found this interesting. It’s not the first time we hear of pesticide use in Bordeaux and some articles have been a little too alarmist. However, what I found interesting about this one is the fact that some wines that show toxicity above recommended thresholds are labeled and promoted as HVE (Haute Valeur Environnementale or High Environmental Value) which is supposed to be a very stringent and reliable certification in France. It appears that it is not so.
This also ties into labeling the wine “ingredients” on the label. I think I saw a pretty deep topic about that on this forum a little while ago.
For those interested, reading French or using Google translate:
https://alerteauxtoxiques.com/2020/09/14/analyses-de-residus-de-pesticides-dans-les-vins-les-resultats-la-hve-encore-gourmande-en-pesticides/
And a quick view of this article by a blogger (Marc Vanel):
https://www.marcvanel.be/pesticides-et-hve/