Ar hyn o bryd, mae 25 o safleoedd tirlenwi yng Nghymru yn nwylo 20 o weithredwyr safleoedd tirlenwi. Yng Nghymru, mae'r Swyddfa Cyfrifoldeb Cyllidebol yn rhagweld y bydd treth dirlenwi'n cynhyrchu £27m yn ystod 2018-19.
The Bill will provide a broadly consistent approach to the existing landfill tax to provide stability and reassurance to businesses and minimise the risk of waste tourism. But it will seek to improve the current regime by making the rules clearer and easier to understand and by addressing current areas of confusion and uncertainty.