We want your views on draft charging guidance to Ofwat the independent economic regulator of the water and sewerage sector in England and Wales for:
Hoffem glywed eich barn ynghylch canllawiau drafft i Ofwat, sef y corff rheoleiddio economaidd annibynnol ar gyfer y sector dŵr a charthffosiaeth yng Nghymru a Lloegr mewn perthynas â’r canlynol: