Mae adran 105ZH newydd yn galluogi’r Ysgrifennydd Gwladol a Gweinidogion Cymru i lunio a diwygio canllawiau codi tâl i Ofwat sy’n berthnasol i swmpgyflenwadau yn eu priod awdurdodaethau. Mae’n ofynnol i’r Ysgrifennydd Gwladol a Gweinidogion Cymru ymgynghori â’i gilydd ac â phersonau perthnasol ynghylch eu canllawiau drafft cyn iddynt gael eu cyhoeddi.
New section 105ZH enables the Secretary of State and Welsh Ministers to produce and revise charging guidance to Ofwat relevant to bulk supplies within their respective jurisdictions. The Secretary of State and Welsh Ministers are required to consult each other and relevant persons on their draft guidance before it is published.