It is not students, but visitors to the city who are largely to blame for antisocial behaviour during Orientation Week, a report says.
The University of Otago is also concerned external promoters who run events during Orientation Week do not provide "the same level of safety'' as the Otago University Students' Association.
The report assessing the collaboration of the council, police, the university, Campus Watch and OUSA during Orientation 2016, will be discussed at a Dunedin City Council planning and regulatory committee meeting next week.
The collaborative app-roach contributed to some positive results including reductions in litter and antisocial behaviour by students.
In the report, Otago Coastal area commander Inspector Jason Guthrie said there was a clear trend of non-students being arrested in relation to "Orientation-related'' offences in North Dunedin.
He estimated 66% of those people arrested during Orientation were not students.
A letter by University of Otago vice-chancellor Harlene Hayne and OUSA president Laura Harris said Orientation events held by OUSA "went exceptionally well''.
However, the increase in the number of outsiders to the city who were "descending on'' North Dunedin during Orientation was of concern.
"The growing number of outsiders has been making the streets of North Dunedin increasingly unsafe places to be.''
The availability of cheaper alcohol and a lack of bars in North Dunedin limited the options for safe places students could socialise, which added to congestion at parties in the area.
The university was also concerned about external promoters running Orientation Week events.
"None of them provide the same level of safety that OUSA provides for their events.''
OUSA provided a multi-agency approach involving students helping students, which could not be replicated by external promoters, the letter said.
In the wake of the Six60 concert balcony collapse, the university was working with the Dunedin City Council and OUSA to consider guidelines for events not organised by OUSA.
Dunedin City Council customer and regulatory group manager Adrian Blair said the council believed the concert had been held in an "inappropriate venue'' which resulted in the balcony becoming overloaded, causing the collapse.
Despite attempts to identify potential noise issues, including sending letters to known "party'' houses, there were 1332 noise complaints from January to March, the highest number ever recorded, the report said.
The Hyde St party was "well managed'' with only one noise complaint during the event.
