Information published this week shows an increase of 14% in fly tipping incidents across Wales in 2015-16 costing local authorities £2.1million, up from £1.8million in 2014-15.
The areas with the biggest increases were Merthyr Tydfil (67 per cent), Cardiff (59 per cent), Torfaen (53 per cent), Pembrokeshire (47 per cent) and Swansea (37 per cent).
The largest increases were in Cardiff (increase of 2,309 incidents) and Swansea (increase of 1,625 incidents).
The number of successful prosecution outcomes in 2015-16 are the lowest since 2006-7.
Commenting, Welsh Liberal Democrat Local Government Spokesperson Peter Black said;
“If Councils are spending such an eye-watering amount of public money on clearing fly-tipping, we need to ask what’s being done to prevent people from fly tipping.
“This last year has seen the lowest number of successful prosecution outcomes in any year since 2006-07 despite an increase of more than 4,500 in the number of reported incidents.
“More must be done to clamp down on serial fly tipping and protect our communities and our environment. In an era of a tightening public purse Local Authorities must focus on prevention and must be responsive when strategies aren’t working.”