Melamine has also been shown to have carcinogenic effects in animals in certain circumstances, but there is insufficient evidence to make a judgment on carcinogenic risk in humans.
Until more is known about the possible carcinogenic effects of cell phone use, curb your kids’ cell phone habits by encouraging texting or using a landline instead.
Disinfection is a very important unit process in water treatment, but the ordinary disinfectant chlorine will produce disinfection by-products which have potential carcinogenic effects.