Since 2004 Source & Service is providing modern up-to date measuring and control instruments for the hydrology, meteorology and water quality. High demands on quality, precision, reliability and longevity are made to the components and sensors. The modern, highly-developed evaluation procedures offer almost infinite transparency for the physical conditions surrounding us. They are only as accurate as the instrument, which records the values under field conditions. We accepts the challenge and provide service which meet the evaluation possibilities.