Not easily forgotten, What the Waters Left Behind brings an Argentinian flavour to the slasher genre, which will satisfy many horror fans' bloodlust.
—Michael Allen, 28 Days Analysis
There are a lot of very long-lingering super-creepy shots that are very effective. As long as you go into this realizing it's a 'killer cannibal Argentinian rednecks in the wild' kind of story, and not something supernatural, you'll enjoy it.
—Brian Schell, Horrorguys.com
It is a mixture of 'Wrong Turn', 'The Hills have Eyes' and 'Mad Max'.
—Ash Williams, Horrormagazine.de
The filmmakers use different resources, special and visual effects that result in a work of great character, excellent quality in all technical areas...
—Martín Chiavarino, Metacultura
Tackling everything from writing, directing, producing, editing and scoring their film they have woven together a rich visual tapestry, using some stunning photography and a rich saturation of the colors available against the blanched landscape of Epecuen.
—Andrew Mack, Screen Anarchy
...for real horror fans to watch
—Unknown Writer, Screen Independant
It accomplishes its objectives with style, and that's more than can be said about a lot of flicks.
—Terror Spective, terrorspective.com
A movie for lovers of the disturbing...
—Josep M. Luzán, terrorweekend.com
Who loves series like The Texas Chainsaw Massacre , Wrong Turn or The Hills Have Eyes will surely be well served with What the Waters Left Behind . The film is bloody, cruel, brutal, pays homage to its American role models and makes it clear from the start.
—Stephan Lydike, yearsofterror.eu