The Water Companies Association established first contacts with the Hungarian water management association MaVíz in 2006 at the 6th National Waterworks Competition of Fitters. Possible forms of cooperation were discussed at this event, concluding that the Association of Water Companies will join the future cooperation agreement, the so-called Collaboration Agreement, to which, in addition to Hungary, joined other countries of Central and Eastern Europe such as. Bulgaria, Romania, Bosnia and Herzegovina and the Czech Republic.

This contract was signed on April 14, 2007 at MaViz headquarters in Budapest.