Dolen Cymru’s work involves teacher mentoring, mental health training, support for a rugby academy, water sanitation and hygiene and supporting dozens of school links between the 2 countries.
Mae Tasglu Gwella Ansawdd Afonydd Cymru yn dod â rheoleiddwyr, y llywodraeth a chwmnïau dŵr ynghyd i wella ansawdd dŵr afonydd.