Councillors in Gwynedd have claimed that some motorhome and campervan users are emptying chemical toilet waste into rivers and leaving litter at beauty spots. Problems were raised at a Cyngor Gwynedd meeting, with hotspots including Y Foryd in Caernarfon, Morfa Bychan near Porthmadog, Nant Gwynant, Llanberis and Yr Wyddfa. The council backed a motion to consider further measures to tackle inappropriate parking and overnight stays, despite four pilot Arosfan sites for motorhomes.