Neath Port Talbot recorded the highest in-year collection rate at 97.8% whilst Blaenau Gwent recorded the lowest at 92.7%.
Cafwyd y gyfradd gasglu uchaf y flwyddyn hon yng Nghastell-nedd Port Talbot (97.8%) a’r gyfradd gasglu isaf ym Mlaenau Gwent (92.7%).