Water hardness represents the concentration of calcium and magnesium in it. The more of these minerals, the harder the water. Water supplied by Kraków Water to individual parts of the city is soft or medium hard.
To ensure the best quality of water, it undergoes a multi-stage treatment process at every plant. Kraków Water uses state-of-the-art water disinfection technologies, including a UV radiation system also found in New York and Rotterdam. Having passed through the whole process, water is supplied to consumers through a water supply network approximately 2,280 km in length, which is almost the distance from Kraków to Mirandela in Portugal in a straight line.
Water hardness map