through this five years later. >> reporter: arianna's youngest son is bearing the burden. >> i don't like that water. >> reporter: why not? >> it's nasty water in flint. >> reporter: you ever thought about movering? moving? >> at the end of the day, why not fight for what you believe in? this is my home. >> reporter: it's not just flint, michigan. you have thinks like portland, oregon, providence, rhode island, all struggling with contamination in their water supply. this is a huge public health danger. experts say we won't know the true extent of the damage done, until a generation of these affected kids become adults. and here we are, five years after the flint water crisis, and the folks i spoke to, rely on bottled water for everything. the water in their homes and schools isn't safe. >> thank you, geoff. i saw a story where a woman was pouring watt and it was just brown. come on. >> it's so important that you keep the focus. it doesn't fade in communities