What Lies Upstream (2017) is a Documentary film that follows in this detective story, filmmaker Cullen Hoback investigates the largest chemical drinking water contamination in a generation. But something is rotten in state and federal regulatory agencies, and through years of persistent journalism, we learn the shocking truth about what’s really happening with drinking water in America. Currently, you can watch What Lies Upstream on Amazon Prime Video, Amazon Prime Video with Ads, Amazon Video, Apple TV Store. Streaming availability may vary by country and platform over time. It has a user rating of 6.6 out of 10 from 19 votes. Fans of documentary movies may also want to explore similar titles below.