Fly-tipping across a city has fallen by more than a quarter in the last five years, a council has said.
Milton Keynes City Council reported that incidents had reduced by almost 27% since a fly-tipping action plan was introduced.
The plan has now been updated with new measures, external, including higher penalties for larger offences and seizure of vehicles involved in waste crimes.
Johnny Luk, a Conservative councillor, has welcomed the update but has questioned the figures.
The council, which is run by a Labour and Liberal Democrat coalition, said its success in reducing fly-tipping had been due to targeted enforcement, community engagement and investigating to gather evidence for prosecutions.
Luk said: “The numbers could result from less reporting because people might have lost faith in reporting.
“If you look at the amount of fines being issued, which are in the tens, I would say per quarter compared to the thousands [of incidents] overall per year, then I would argue that the ratio between fining and actually fly-tipping is quite skewed and we to work on that.”