Jean Pierre Bavumiragira, Hailong Yin, Edwin Kipkrui, Pascaline Uyisaba, Yves Ndizeye & Alex Bazambanza. Impact Associated With the Lack of Centralized Sewerage Treatment Systems and Inadequate Operation of Available Decentralized Treatment Systems, a Source of Emerging Contaminants in Urban Water Resources: A Review Case Study of Kigali City Rwanda, a Reflection of Other East African Countries’ Cities. EIEGES-V2 2023, 67-93.