This was a key finding of research we published in January 2017 which also concluded commencement of Schedule 3 is necessary to deliver good quality SuDS on new developments.
Roedd hwn yn un o ganfyddiadau allweddol ymchwil a gyhoeddwyd gennym ym mis Ionawr 2017 ac a ddaeth hefyd i'r casgliad fod angen cychwyn Atodlen 3 er mwyn sicrhau SuDS da ar ddatblygiadau newydd.