Neath Port Talbot recorded the highest in-year collection rate at 98.0% whilst Blaenau Gwent recorded the lowest at 93.9%.
Cafwyd y gyfradd gasglu uchaf y flwyddyn hon yn Sir Benfro (98.3%) a’r gyfradd gasglu isaf ym Mlaenau Gwent (93.8%).