Find out how to stop your waste being fly-tipped ​ ​​​​​​​​​​​External link opens in a new window ​ ​.
Dysgwch sut i stopio eich gwastraff rhag cael ei dipio’n anghyfreithlon​​​ ​ ​​​​​​​​Dolen yn agor mewn ffenestr newydd ​ ​​.