Services provided by local authorities, such as refuse collection, contact details for all local authorities can be found on the Welsh Local Government Association website.
Gwasanaethau a ddarperir gan awdurdodau lleol, megis casglu sbwriel – mae manylion cyswllt pob awdurdod lleol i’w gweld ar wefan Cymdeithas Llywodraeth Leol Cymru.