As for the production available over this period, it was estimated as follow (in m3 / day):

- - factory: 330,000 - factory: 330,000
- - plant: 110,000 - plant: 110,000
- - factory: 40,000 - factory: 40,000
- - factory: 36,000 - factory: 36,000
- - Imbu factory: 35,000 - Imbu factory: 35,000
- - plant (modules 1 and 2): 220,000 - plant (modules 1 and 2): 220,000

** Total production: 771,000

There is therefore a real deficit of 169,000 m3 / day. This situation justifies the need to build module 3 of the Ozone plant (110,000 m3 / d) around 2025 that is to say directly after the construction of the second module of 110,000 m3 / d. The general objective of this study is to identify, characterize and assess the potential environmental and social risks and impacts during the construction of the works planned within the framework of the project as well as to provide adequate mitigation and prevention measures. The political and legal context of the environmental sector and the sectors of intervention of the PEMU is marked by the existence of relevant policy documents including the National Environmental Action Plan (PNAE, 1996) which defined all the actions to be implemented at national level, for better environmental management, in relation to Agenda 21. The implementation of these policies necessitated the prior definition of an institutional, legislative and regulatory framework in which environmental actions in the Democratic Republic of Congo (DRC) now take place. This, on the legislative level, the 'L aw N° 11/009 of July 9, 2011 on fundamental principles relating to the protection of the environment' was promulgated which aims to promote the sustainable management of natural resources, to prevent risks, to fight against forms of pollution and nuisances, and to improve the quality of life of the populations while respecting the ecological balance. On the regulatory level, the decree n°14/019 of August 2, 2014 fixing the operating rules of the procedural mechanisms of the protection of the environment constitutes the new text which frames all the procedure for carrying out an Environmental Impact Study and Social (ESIA) in order to ensure that a project complies with existing environmental standards. In accordance with the regulations in force, this project must meet the legislative and regulatory requirements as regards environmental protection. In view of the preliminary environmental and social assessment made, the level of environmental and social risk, the implementation of the project relating to the construction works of a raw water catchment station on the Congo River and a drinking water treatment plant on the REGIDESO site in Binza-Ozone, was deemed moderate. Five of the ten Environmental and Social Standards (NES) were deemed relevant for this project; it's about the:

- - No. 1 (Assessment and management of environmental and social risks and - No. 1 (Assessment and management of environmental and social risks and effects);
- - no 2 (Employment and working conditions); - no 2 (Employment and working conditions);
- - No. 3 (Rational use of resources and pollution prevention and management); - No. 3 (Rational use of resources and pollution prevention and management);
- - No. 4 (Health and safety of populations); - No. 4 (Health and safety of populations);
- - No. 10 (Stakeholder engagement and information). - No. 10 (Stakeholder engagement and information).