As part of the ecological classes, students of our school visited the Water Production Plant at LPWiK. On the spot we got to know the way of delivering water to Legnica houses, sewage treatment processes. We got to know the machines, devices and network system on the premises of the Plant. The students also watched a film about a small drop of water, and then they themselves could travel part of this road, listening to many interesting information about the work of the company. We learned that before the water comes from Kaczawy to our homes, it undergoes a series of complicated processes, and its quality is taken care of, among others, employees of the chemical-biological laboratory. Drinking water from the spring, which we have located in our school, we are sure that we drink healthy water.