This technology will greatly benefit countries in the third world.
All clean water was at one time the most foul of sewage, and will eventually end up being part of that most foul of sewage again.
The means of changing poop to clean water again vary in cost and application, and great fortune awaits he who is able to make this conversion at the best cost/benefit ratio, as that person shall surely prosper beyond the wildest dreams of avarice.
My personal suggestion? Set up a series of water desalination plants along the Atlantic coast of Morocco, powered by thorium reactors. The thorium reactors would be used to generate vast amounts of electricity, but that is incidental to this scheme, as the other byproduct of that power generation is heat. Use the heat to run towers that distill sea water, yielding fresh water, which is then pumped over the Atlas Mountains into the Sahara desert. With the growing water supply, the desert is turned back into a lush grain-production area and rain forest, eventually stretching all the way to the Nile, and with the changing weather patterns from the additional moisture, eventually green up most of what is now the arid part of the Middle East.
Meanwhile, back at where the sea water was being distilled into fresh, the brine pools are an additional revenue stream. Not as brine, but as a source of just about every mineral on earth, which is dissolved in the brine. Among of the first to be extracted are the potassium salts, which crystallizes at a much different way and in a different concentration than the dissolved sodium salts, most of which crystallize out first. This much more concentrated brine is then selectively redissolved and various other compounds, rich in specific elements, are further crystallized out, eventually becoming a very rich ore, which may then be refined using the abundant electric power from the thorium nuclear generation plants.
Eventually all these enterprises become income streams, allowing a much higher standard of support for the human population of the planet earth, and eventually providing us with the technology to finally break free from the confines of earth and move off-planet.