Hassan Olarewaju Mustapha, was born on 18th February 1960 at Oke-Oyum in Ifelodun L.G Area of Kwara State. He attended Ikeja Grammar School Oshodi, where he obtained his school Cert in 1979. He proceeded to school of Health Technology in Yaba from 1984 to 1987, where he obtained West Africa Heath Examination Diploma, equivalent to HND Diploma.
He was employed by Mushin Local Government in the health department in 1984 as health superintendent in training. He has since then been posted to various governmental agencies to include; Oshodi/Isolo Local Government Area, Agege Local Government, Ministry of the Environment (MOE), Lagos State Waste Management Authority (LAWMA), and Lagos State Water Regulatory Commission (LSWRC) in year 2015. He has since then rose from rank and file of his profession to become a Director Environmental Health services in July 2016.
He obtained his master’s degree in Environmental Management (M.Sc) in year 2014.
He is married and blessed with Sons and Daughters.