Helping more people around the world to have access to safe drinking water is one of the greatest challenges of the 21st century.
But a company from Carmarthenshire are aiming to improve the situation, with their pioneering technology for purifying water.
The technology takes three minutes to clean the water. We've sped up that process for you in the video below, so you can see how it works.
More top news
Chris Baker found an incredible talent for art. It's so impressive he now has his own exhibition in the Wales Millennium Centre.
Calm and quiet for much of Wales overnight, but there is more wet weather on the way for tomorrow!
We've been looking at individuals and what they're passionate about. Now we shine the spotlight on 11-year-old Joe Elliott....