A wnaiff y Gweinidog ddatgan faint o ollyngiadau carthion sych a ddigwyddodd yng Nghymru yn 2021-22?
Wedi'i ateb gan Y Gweinidog Newid Hinsawdd | Wedi'i ateb ar 01/12/2022
Dŵr Cymru Welsh Water and Hafren Dyfrdwy are required by their environmental permits to provide an annual summary of their Event and Duration Monitors data to the environmental regulator, Natural Resources Wales.
The information you requested is not held by Welsh Government. You may wish to contact Natural Resources Wales, which is required to gather and manage this information. Natural Resources Wales can be contacted at enquiries@naturalresourceswales.gov.uk