This is a complex issue and there is no one easy answer – we all have a part to play if we are to reduce the level of phosphorus and tackle the root causes of pollution.
Mae’n bwnc cymhleth ac nid ar chwarae bach y mae cael hyd i’r atebion – mae gennym oll ran i’w chwarae i ostwng lefelau ffosfforws a thaclo gwir achosion llygredd.