In last week we successfully tested a system for sediment measurements in ponds and wells. Thanks to openness of the LPWiK S.A. in Legnica - one of the biggest water supply company in the Lower Silesia - we had opportunity to verify our solution in the real environment. The system allows to optimise the maintenance of the water treatment infrastructure. Using a ROV equipped with such a device, ponds and wells can be inspected much more frequently with lower costs. That can benefit in less amount of accidents and general improvement of the treatment process.