Neath Port Talbot recorded the highest in-year collection rate at 98.0% whilst Blaenau Gwent recorded the lowest at 92.3%.
Cafwyd y gyfradd gasglu uchaf y flwyddyn hon yng Nghastell-nedd Port Talbot (98.0%) a’r gyfradd gasglu isaf ym Mlaenau Gwent (92.3%).