Mae Cynllun Cymunedau’r Dreth Gwarediadau Tirlenwi yn cael ei ariannu gan Lywodraeth Cymru a’i reoli gan Gyngor Gweithredu Gwirfoddol Cymru. Mae’n cefnogi prosiectau amgylcheddol a chymunedol sy’n gweithio i leihau effeithiau negyddol gwaredu gwastraff, a hynny mewn ardaloedd sydd o fewn pum milltir i safle tirlenwi neu orsaf trosglwyddo gwastraff.
The Landfill Disposals Tax Communities Scheme (LDTCS) is funded by the Welsh Government and managed by the WCVA.  It supports environmental and community projects which aim to offset the negative impact of the disposal of waste in areas up to five miles around a landfill site or waste transfer station.