This Law, composed of 61 articles, regulates Paraná State Policy on Water Resources. It defines its general objectives, main guidelines and instruments. In particular, it rules on the: Plan on Water Resources; Hydrological Basin Plan; Classification of waters according to their use; the rights/duties in water use and the related costs; the State Information System on Hydrological resources. The Law, applying also to groundwater, rules on the participation in managing the hydrological resources b