Ironically, despite BMC's efforts, open defecation is still rife in the city due to a shortage of toilets. FILE PIC FOR REPRESENTATION

Here's a dirty truth: despite being declared Open Defecation Free (ODF), Mumbai may have slipped from its top 10 ranking on the Swachh Survekshan list. While Navi Mumbai Municipal Corporation (NMMC) received an invite to the awards ceremony in New Delhi to honour the country's 10 cleanest cities, the Brihanmumbai Municipal Corporation (BMC) had no such card at its doorstep.