Section 37B(10)(a) and (b) of the Water Industry Act 1991, as amended by the Water Act 2003) and the Environment Act 2021.
Adran 37B(10)(a) a (b) o Ddeddf y Diwydiant Dŵr 1991, fel y’i diwygiwyd gan Ddeddf Dŵr 2003) a Deddf yr Amgylchedd 2021.