Managing municipal solid waste is a pervasive urban problem globally. While several strategies have been applied for efficient municipal solid waste management in developing economies, their performance level has not been critically investigated. Among these strategies, the public private partnership has widest appeal. This study examines the performance of public private partnership in household solid waste collection in Lagos, Nigeria. We collected primary data using a municipal solid waste survey in three residential density areas of Lagos megacity. Descriptive and inferential statistics were used to analyse the data. Two indexes of service performance, namely the service reliability index and operational quality index, were created to produce evidence on public private partnership performance in municipal solid waste collection in Lagos. Results show that the average amount of household solid waste generation per week ranges between 22.75 kg in the medium residential density area and 30.39 kg in the high residential density region of the city. The estimated per capita waste generated in Lagos Megacity is 0.95 kg day -1 . Regression models indicate that the public private partnership performance is significantly influenced by economic status, affordability, flexibility, consistency, cleanliness, coverage and accessibility, as well as number of waste collection vehicles, vehicle maintenance, capacity, trip rate, frequency, number of personnel and quality of personnel. Findings from this study reveal that Lagos residents have strong positive perception of public private partnership as a waste collection policy framework. The study has important policy and practical implications for urban waste management, public health and sustainability in developing economies.

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Abstract. Urban farming is rapidly growing in many cities in Nigeria including a leading African megacity Lagos, although urban stakeholders have paid little attention to the trend over time. The rate of growth of urban farming and its contributions to Lagos state's food supply strategy is worthy of note. In Lagos farming activities are practiced and performed by some able bodied migrants from all parts of the country, who for many reasons could hardly have been absolved by the aggressive urban economy of the city. A close watch on the practitioners reveals a pattern of operation which requires deeper inquiry. A total of 202 urban vegetable farmers were interviewed in four areas of Lagos state to provide primary data for this study. Results from the study showed that an average farmer owns a farm plot of below 120 m by 60 m usually linear and along the expressway, the green vegetable (Celosia argientes) alone constitutes about 97% of what is grown, beds are arranged in sizes of about 1.8 m long by 0.9 m wide and 0.3 m high with furrows in between. The farmers use the simplest local tools, chemical fertilizers, and strategically located irrigation wells. It was also found that the farmers use some part of the vegetables for household consumption, sell others to the local marketers, and contribute their own quota to stem the rising prices of vegetable produce in the local markets. It is therefore imperative on the stakeholders to re-examine the relevance of urban farming in the city and provide support for its growth.

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One of the basic sources of risk to public health is the built environment. Both housing and health are social issues that need to be constantly ensured by urban stakeholders. There seems to be a strong connection between housing quality and health conditions of inhabitants. However, not much is known about the health risks that poor housing conditions could pose to the residents in Lagos, Nigeria. This paper therefore examines the impacts of housing conditions on the health of dwellers in Lagos metropolitan areas. Data were obtained from survey of residences in three areas of Lagos. Bivariate and multivariate analyses showed that there are strong negative correlations between housing conditions and health of residents and the residential use value, space quality and structural quality factors are responsible for health risk experienced in the areas under study.