The study explores the awareness and attitude of residents of Port Harcourt Metropolis towards proper solid waste disposal. The study considers the role of adult education programme in boosting the awareness of the people about the means of solid waste disposal. A major concern of the work is to arouse positive attitude of relevant agencies and the general public on the sustainability of the healthy physical environment. There is a global outcry on the challenges of environmental degradation all over the world and mostly in less developed nations like Nigeria. Proactive measures are sought to combat this menace. The first step, however, must be the reorientation of the people who indulge in the unwholesome practices of indiscriminate waste disposal. Although there had been strong speculations of the lack of positive attitude towards proper solid waste disposal throughout Nigerian cities, there is need to develop empirical proof to the claims. Findings of this study have justified the existing claims. The study has preferred the institutionalization of environmental adult education option programmes for a positive attitude towards solid waste disposal in Port Harcourt metropolis.