I made £4.5m available in 2020/21 to tackle pollution from mine water sources, which is another major source of water pollution in Wales.
Rwyf hefyd wedi darparu £4.5 miliwn yn 2020/21 er mwyn mynd i’r afael â llygredd dŵr o fwyngloddiau, sef ffynhonnell fawr arall o lygredd dŵr yng Nghymru.