I am a chemist, engineer, and water resource scientist. While I'm always happy to see a documentary raise awareness of water availability/quality issues, this documentary has a number of issues of its own.
First of all, the so-called 'solutions' being offered by its sprawling list of do-gooder celebrities are not innovative, novel, or sustainable. They're well-proven technologies putting temporary band-aids on deep sociopolitical problems for the sake of making their celebrity sponsors feel good.
Second, the film has a number of corporate sponsors. As a result, it failed to touch on some very real issues with the way we currently treat water. For example, Reverse Osmosis is disgustingly inefficient. It wastes about half the water it treats. It also absolute munches through power, and the waste stream from RO is a concentrated pollutant being shot back into the environment. But Suez, one of the sponsors, is a major player in RO and membrane desalination. So that got glossed over.
Third, it perpetuates the myth of a straight-up bogus technology. Humidity-condensers are not viable products. They've been debunked over and over and over again. The thermodynamics of converting whatever small amount of moisture is in the air to drinking water are enormous. And other than that lone instance of local innovation, the rest of the documentary reeks of western-savior complex.
This documentary is mental candy. Replaces real nutrition, and is bad for your teeth (from all the clenching).
