According to the Shoalhaven Bereavement Services manager Pierre Duparte vandalism is common in the cemetery because of the low level of visitation.
Mr Duparte said in his 18 years in the job he had recorded more than 10 acts of ashes vandalism in the cemetery.
Last week the niche wall was vandalised, with two lots of cremation ashes scattered. Prior to that almost five commemorative ashes were damaged.
Mr Duparte said Shoalhaven City Council became aware of the most recent attack only when a visiting family discovered the desecration and contacted council.
“We’ve had immense problems with the wall and great difficulty contacting relations when something happens, mainly because the wall is so old, it’s difficult to track people down,” he said.