Although some are recorded, the statistics do not cover all fly-tipping incidents on private land, and not all incidents of fly-tipping will be reported to the local authority.
Er y cofnodir rhai achosion, nid yw’r ystadegau yma yn cynnwys pob achos o dipio anghyfreithlon ar dir preifat, ac ni chofnodir pob digwydd tipio anghyfreithlon gydag awdurdod lleol.