The area of the Maritime Croatia includes the area of the Croatian part of the Adriatic, the Dalmatian hinterland and all the Croatian islands. This area is abundant with water resources: the sea and the rivers, but should not ignore lakes and groundwater. It is established that in the area of Maritime Croatia valorization of water should be observed from the point of view of drinking water, irrigation, economy and tourism, agriculture, hydroelectric power, etc. It is interesting to note that the percentage of the population is connected to the local water supply system Primorje - Gorski Kotar County than is the average on the Republic of Croatia. It has been established that in the area of Maritime Croatia, regular sampling is carried out, ie determination of water quality, and in addition, systematic protection measures are implemented, both active and passive. In the summer of 2017, a fire occurred in the area of Dalmatia, which included the area of the springs of the river Jadro and Žrnovnica, and all measured values were below the permissible limits.