While Europeans are a small portion of the 1.1 billion worldwide without enough drinking water, or the 2.6 billion worldwide without sanitation, the report presented on Saturday showed that water issues can afflict even people in some of the most developed countries, and on a continent that often seeks to export its water expertise.

Southern European countries are susceptible to droughts, for example, while northern nations are at risk of floods and the entire continent must help eastern countries and repair centuries-old waterworks, officials said.

"The aging infrastructure in many European cities needs immediate action," said Jeoren Van der Sommen, of the Netherlands Water Project.

Officials estimated that about half of Europe’s waste water is discharged untreated, and said climate changes threatened to wreak havoc by making weather more unpredictable.

"Natural disasters are understood (in Europe) as temporary events, but there are some catastrophes that are becoming structural, permanent," said Cristina Gutierrez, an EU Parliament member from Spain.

Officials called for eastwest cooperation to improve eastern European nations’ water and sewer systems. Andre Santini, of France’s Seine-Normandy water authority, proposed taxing consumers euro.01 ({{MB:DR(ARTICLE:CONTENT):MB}}.01) per cubic meter (yard) of water to fund such projects.

Another point of contention is between France and Spain, which suffers water shortages and aquifer depletion and would like its northern neighbor to share water from border rivers. But the French appear loath to do so.

"Yes, France has a bit more water than Spain," said former French Prime Minister Michel Rocard. "But until we have reached that level where there is no other possibility except water sharing, before we get to that stage ... we must see better local management of water resources, better irrigation."

Gutierrez dismissed the French position as water politics.

"At this point, water has become an element of political identity, and that translates into a situation in which nobody wants to share water. In Spain, we are convinced of the need for water sharing," she said.

Netherlands Crown Prince Willem-Alexander urged Europe to form a regional partnership to solve its problems, saying that the continent frequently lectures other countries.

"We always have our finger up to tell the rest of the world what to do," he said.