The River Dulas (Welsh: Afon Dulas) is a tributary of the River Teifi and has its source near the village of Llangybi, Ceredigion, Wales. Its confluence with the Teifi is near Lampeter.[1]
In June 2017, effluent from an anaerobic digestion plant in Lampeter was discharged into the Dulas. This caused a pollution incident that was investigated by Natural Resources Wales.[1]
52°06′30″N 4°04′27″W / 52.1083°N 4.0742°W