Our friend recommends this Arsenic Crisis Newsletter & Discussion. He said of it, "… this site has a boatload of contributions, I think some of them may actually be good research. FYI in case you want to scan the overall chatter about the As problem. Regards, David"
The formal group description is: "Newsletter & discussion of the arsenic crisis in W Bengal India and Bangladesh, and related situations. This group merges the subscriber lists of the arsenic-crisis-news, arsenic-source, arsenic-medical, and arsenic-safewater groups."