Pa ystyriaeth y mae Llywodraeth Cymru wedi'i rhoi i sefydlu corff gwarchod annibynnol i fonitro achosion o lygredd gan gwmnïau dŵr?
Wedi'i ateb gan Y Dirprwy Brif Weinidog ac Ysgrifennydd y Cabinet dros Newid Hinsawdd a Materion Gwledig | Wedi'i ateb ar 24/09/2024
The environmental regulator Natural Resources Wales (an arms-length body) already monitors pollution incidents by all sectors and individuals, including water companies.