Council environmental engineer Ryan Hughes said records showed the council's contractor was notified of the dumped rubbish on June 26.
"The contractor attended, found a pile of rubbish and collected it. However, it appears the rubbish collected was a different pile," he said.
"Hokio Beach is a problem area for dumped rubbish and correctly identifying the pile of rubbish a customer has notified us about can be difficult for contractors without an exact location."
Hughes said rubbish dumped on the beach came under the responsibility of Horizons Regional Council, but that the district council had sent their contractor on Horizons' behalf to clear the pile photographed last week.
He said the council was pursuing avenues of enquiry into identifying who had dumped the trash.
Pharmacy cream pottles amongst the rubbish did have a name printed on them, however Hughes said medical confidentiality could be an issue in using that information.