si anta eth ▁y r ▁Am gy l ched d ▁C ym ru ▁in ▁Wel sh ) ▁was , ▁until ▁ 3 1 ▁March ▁ 2 0 1 3 , ▁a ▁Wel sh ▁Government ▁Sp ons ored ▁Body , ▁while ▁also ▁being ▁part ▁of ▁the ▁Environment ▁Agency ▁for ▁England ▁and ▁Wales . ▁Its ▁principal ▁a ims ▁were ▁to ▁protect ▁and ▁improve ▁the ▁environment ▁in ▁Wales ▁and ▁to ▁promote ▁sust ain able ▁development . ▁ ▁It ▁had ▁an ▁oper ational ▁area ▁defined ▁along ▁its ▁Eastern ▁boundary ▁by ▁the ▁catch ments ▁of ▁the ▁River ▁De e ▁and ▁the ▁River ▁W ye . ▁Those ▁parts ▁of ▁the ▁River ▁Se vern ▁in ▁Wales ▁were ▁managed ▁by ▁the ▁Environment ▁Agency ▁whilst ▁those ▁parts ▁of ▁the ▁River ▁De e ▁and ▁River ▁W ye ▁catch ments ▁that ▁are ▁in ▁England ▁were ▁never theless ▁managed ▁by ▁Environment ▁Agency ▁Wales . ▁The ▁Agency ▁also ▁had ▁a ▁public ▁facing ▁boundary ▁which ▁correspond ed ▁to ▁the ▁political ▁boundary ▁of ▁Wales . ▁ ▁On ▁ 1 ▁April ▁ 2 0 1 3 ▁the ▁organisation ▁was ▁merged ▁with ▁the ▁Coun tr ys ide ▁Council ▁for ▁Wales ▁and ▁Forest ry ▁Commission ▁Wales ▁into ▁a ▁single ▁environmental ▁body , ▁Natural ▁Resources ▁Wales . ▁ ▁Ro le ▁and ▁respons ib ilities ▁▁ ▁Environment ▁Agency ▁Wales ' ▁role ▁included : ▁reducing ▁industry ’ s ▁impact s ▁on ▁the ▁environment , ▁enfor cing ▁poll ution ▁legisl ation ▁and ▁reducing ▁the ▁harm ▁caused ▁by ▁flo oding ▁and ▁poll ution ▁inc idents . ▁It ▁also ▁o vers aw ▁the ▁management ▁of ▁waste ,