Today it takes up to three days to test for bacteria in the water. If it needs to be done faster, the costs increase significantly.

The founders of SBT Aqua, Gustav Skands, Frederik Aalund and Christian Bertelsen, are on a mission to change that. On Friday they won Green Tech Challenge in Copenhagen, showing the team is on the right path.

“SBT Aqua are the winners of Green Tech Challenge 2016 because they have a vision of securing pure water all over the world. The team is very competent and have an in-depth business understanding that can lead them to global success. Additionally, they have good partners and happy paying customers,” Martin A. Petersen, founder of Green Tech Challenge, said in a statement.

SBT Aqua has developed a technology that with the use of sensors is able to measure inorganic particles and bacteria concentration in water. With this technology, fewer people will get sick of polluted drinking water and it will be possible to detect polluted drinking water faster. SBT Aqua differentiates from other quality controls of water by using wireless sensors, which means that the quality of the water is continuously measured and manual sampling is unnecessary – making

The startup differentiates from other quality controls of water by using wireless sensors, which means that the quality of the water is continuously measured and manual sampling is unnecessary – making measuring faster, better and cheaper.

In addition to SBT Aqua 19 other green tech startups participated in this year’s Green Tech Challenge.

Green Tech Challenge, the biggest greentech investment event in Denmark, was founded in 2015 by four Danish entrepreneurs with an ambition to make green business good business, and to prevent the death of innovation by combining sustainable startups with capital and expert knowledge. In January, Green Tech Challenge is held in Berlin, in April in Lisbon and Helsinki in June.