3AWater is a startup company from Kuopio, Finland established by nanotechnology and on-site analysis professionals in January 2019. We offer a portable device for measuring metal content of water on-site in real time. The technology brings great benefits compared to old-fashioned laboratory measurements. Our technology provides the results at the sampling site in just a few minutes. This results in significant savings compared to the traditional laboratory analysis, which involves on-site sampling, delivery of the samples to a laboratory and measurements carried out with expensive devices by highly trained personnel.