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
The Bluebirds need two wins from their final three games to guarantee promotion.
Jeremy Corbyn will be the main speaker at a Welsh Labour conference coming to terms with Carwyn Jones' announcement of his departure.
Any heavy showers will clear away northeastwards through late evening.