The River Dulas ( Welsh: ''Afon Dulas'') is a tributary of the

River Teifi The River Teifi ( ; , ), formerly anglicised as Tivy, forms the boundary for most of its length between the Welsh counties of Ceredigion and Carmarthenshire, and for the final of its total length of , the boundary between Ceredigion and Pembr ...

and has its source near the village of

Llangybi, Ceredigion Llangybi is a village and community in the south of Ceredigion, Wales. It is located on the A485 between Tregaron to the north and Lampeter to the south, a mile and a half north of the village of Betws Bledrws, which is in the wider communit ...

Wales Wales ( ) is a Countries of the United Kingdom, country that is part of the United Kingdom. It is bordered by the Irish Sea to the north and west, England to the England–Wales border, east, the Bristol Channel to the south, and the Celtic ...

. Its

confluence In geography, a confluence (also ''conflux'') occurs where two or more watercourses join to form a single channel (geography), channel. A confluence can occur in several configurations: at the point where a tributary joins a larger river (main ...

with the Teifi is near

Lampeter Lampeter (; (formal); ''Llambed'' (colloquial)) is a town, community and electoral ward in Ceredigion, Wales, at the confluence of the Afon Dulas with the River Teifi. It is the third largest urban area in Ceredigion, after Aberystwyth and C ...

. 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 Natural Resources Wales () is a Welsh Government sponsored body, which became operational from 1 April 2013, when it took over the management of the natural resources of Wales. It was formed from a merger of the Countryside Council for Wales, E ...

References

Rivers of Ceredigion {{Wales-river-stub