Amsterdam city council will only grant licences to festival organisers if they guarantee festival goers will have unlimited access to free tap water to fill up their water bottles, the Parool reports on Wednesday.

In June a number of visitors to the Amsterdam Open Air festival had complained security officials had stopped them filling up their empty water bottles at taps. According to local VVD politicians, visitors to other festivals have had similar complaints.

Festivals organisers are supposed to ensure that there is one tap for every 150 visitors.

However, research published in the Telegraaf on Wednesday shows more than half of festival goers find it difficult if not impossible to find tap water.