Neath Port Talbot recorded the highest in-year collection rate at 97.9% whilst Blaenau Gwent recorded the lowest at 93.2%.
Cafwyd y gyfradd gasglu uchaf y flwyddyn hon yng Nghastell-nedd Port Talbot (97.9%) a’r gyfradd gasglu isaf ym Mlaenau Gwent (93.2%).