Why do you think the problem is limited to the US? >The chemicals were used in products like Teflon and Scotchguard and in firefighting foam. Some are used in

Why do you think the problem is limited to the US? >The chemicals were used in products like Teflon and Scotchguard and in firefighting foam. Some are used in a variety of other products and industrial processes, and their replacements also pose risks. All of these chemicals are in common use throughout the developed world. This isn't just a case of evil corporations dumping industrial waste into impoverished children's drinking water, though corporate environmental pollution does play a role. They come from everyday use and wear of common products, and they are incredibly expensive to filter even by centralized plants once they've made it into the water supply through e.g. dish washing, clothes washing, and street runoff. And the issue is that they accumulate over years or possibly decades.