During 2020-21, billing authorities collected £22 million of arrears and wrote off £4 million as uncollectable.
Yn ystod 2020-21, casglwyd £22 miliwn o ôl-ddyledion o ran blynyddoedd blaenorol gan awdurdodau bilio, a chafodd gwerth £4 miliwn eu dileu fel dyledion drwg.