Data was contributed by DRINKADRIA project partners (AcegasApsAmga S.p.A., Integrated Urban Water Management Authority of the Venice Lagoon - Veritas, Water Utility of Nova Gorica, Istarski vodovod d.o.o. Buzet, Water Utility Liburnijske vode d.o.o., Splitsko-dalmatinska county and Dubravačko-neretvanska county, Jaroslav Černi Institute, Municipality Ljubuski, Municipality Tomislavgrad, Municipality Grude, Municipality Posušje, Public Utility "Vodovod i kanalizacija"Nikšić), The surveying and mapping authority of the Republic of Slovenia (GURS), OpenStreetMap and others.