I'm not going to say whether they're dumping dyes into drinking water supplies because I don't know. However, legality has never stopped companies from dumping waste, toxic or otherwise. When the punishment is almost exclusively ever a fine, they can and do budget for it.
CCC19 t1_jdhzx72 wrote
Reply to comment by TheLurkerSpeaks in Scientists have shown how toxic dyes can be filtered out of wastewater using the method and material developed by the group. The procedure uses sunlight as a catalyst and doesn’t involve any pressure or heat. It can remove 80 percent of dye pollutants in wastewater. by Wagamaga
I'm not going to say whether they're dumping dyes into drinking water supplies because I don't know. However, legality has never stopped companies from dumping waste, toxic or otherwise. When the punishment is almost exclusively ever a fine, they can and do budget for it.