Background: Wastewater represents a health risk for populations. For sanitary safety, it is important to know their physico-chemical and microbiological qualities in order to better understand the risks incurred by the population. Objective: The aim of this study is to analyse the microbiological and physico-chemical quality of domestic wastewater in Adétikopé. Methodology: 12 wastewater samples were collected in Adétikopé from December 2022 to February 2023. Physico-chemical parameters were determined in accordance with AFNOR T90-105/ T90-023 and French standard NF T 90101. In microbiology, AFNOR was used as a reference for the detection of germs contaminating wastewater. Results were assessed in relation to European Union Criteria 98/83/EC. Results: The wastewater analyzed had a pH close to neutral, with an average pH of 7.05. The pollutant load generated ranged from 32 mg/l to 201 mg/l for BOD5, from 660 mg/l to 900 mg/l for COD and from 408 mg/l to 2080 mg/l for suspended solids. Concentrations of fecal coliforms and fecal streptococci are very high, far exceeding WHO guidelines for population health safety.

Background: Waste management is one of the challenges facing cities around the world. In Africa, where the increase in the urban population and the growing demand for consumer goods are driving up the rate of waste production, waste collection and disposal are posing serious problems, not only for municipal and central government officials, but also and above all for the local population. In Togo, and more specifically in the city of Lomé and the surrounding area (Greater Lomé), as in other African cities, the average annual production is estimated at 305340 tonnes, of which 89428 tonnes are collected and buried, giving a collection rate of 29.29%. A tiny proportion of the waste collected (9,000 tonnes, or 2.95%) is recycled as compost by associations and/or NGOs. The three key players who share this task are the local authority, the formal sector and the informal sector. Objective: The aim of this study is to assess the current state of waste management in Greater Lomé, which poses a major threat to public health, socio-economic development and the environment. Material and methods: To this end, documentary research and surveys carried out on two types of waste management stakeholder, namely formal and informal, in the five districts of Greater Lomé enabled us to make a general diagnosis. Results: However, despite the efforts made by the stakeholders involved in waste management, it appears that the transformation of solid household waste into compost remains the most suitable endogenous method for recovering fermentable waste and returning it to the soil, in order to improve the organization of waste management in the city of Lomé, reduce the quantity of waste to be landfilled and clean up the city. KEYWORDS: Urban waste, management, composting, collection, treatment, autonomous district of Greater Lomé.

Urban governance and sanitation in the peri-urban commune of Agoè-Nyvé 6 in Togo: Diagnosis of the sanitation system in Adétikopé.