Various events will be organised on a daily basis, including for children, to raise awareness of the importance of quality drinking water.

Ljubljana, which has been for centuries relying on its near-by water sources, is one of a few European capitals which boasts high-quality tap water that requires no previous technological treatment, the municipality said in a press release.

The city got its first modern water supply system in 1890. Today, Ljubljana's water pipes and sewage systems are 2,000 kilometres long, which is twice the distance between Ljubljana and Berlin, according to a brochure on the Green Capital of Europe 2016.

The 315,000 water users in the Ljubljana area use 115 to 150 litres of water a way. If industrial and other water use is taken into account, the average use per person is about 200 litres, Vo-Ka data shows.

In the warm months, drinking water is available to Ljubljana residents and visitors at over 30 public taps around the city.

Ljubljana also boasts the biggest waste water treatment plant, where an average 80,000 cubic metres of waste water is cleaned a day.

Some 85% of Ljubljana residents are connected to the public sewage system and the goal is to raise the share to 95% by 2020.

Public utility Vo-ka, which manages the water supply and the sewage systems in the capital, will spend EUR 10.4m on investments this year, of which EUR 8.2m will go for the renewal of the water supply system and EUR 2.2m for development projects.

This month the city will present its urban water ways and the plans for the development of the infrastructure along with the quality of the city's underground and surface waters.

A lecture will also be organised on the importance of water metering, at which participants will learn how to analyse their water bills.

Children and adults will be invited to take part in educational games organised by Vo-Ka in front of the Town Hall on Saturdays.

Various educational workshops will also be held for children and youth, and for families as well as an on-line quiz show on responsible water use. The events at the information centre in front of the Town Hall will be coordinated by Vo-ka.