Dŵr Cymru - Welsh Water

Dŵr Cymru - Welsh Water
Pentwyn Road
Nelson
Treharris
Mid Glamorgan
CF46 6LY

Bill / account and general enquiries: 0800 052 0145
(Mon - Fri 8am - 8pm, Sat 8:30am - 1:30pm)

Water services and emergencies (24-hour): 0800 052 0130
Sewerage services and emergencies (24-hour): 0800 085 3968

Report a leak (24-hour): 0800 281 432