Hull City Council spent over half a million pounds investigating more than 20,000 reports of fly-tipping between 2012 and 2018.
According to the Government figures, the council received less than a fifth - just over £95,000 - of the money spent back in fines.
In response, the council is looking at bringing in an external enforcement team and impose higher fines.
Doug Sharp is assistant city manager for streetscene at the council.
He says: "We have a 24/7 workforce out there and we hope bringing in some litter enforcement officers will potentially act as a deterrent and stop people littering if they get caught and most importantly lift the levels of cleanliness because we'll have less litter to clear up."