Sanitation and wastewater management are critical components of public health and environmental sustainability. This article juxtaposes the wastewater infrastructure in Nigeria and the United States, examining the challenges each nation faces and their pathways toward sustainable development. Nigeria struggles with rapid urbanization, population growth, and insufficient infrastructure, leading to widespread reliance on unsanitary disposal methods such as pit latrines and open defecation. These practices result in severe public health issues and environmental degradation, impeding progress towards achieving the United Nations Sustainable Development Goals (SDGs), particularly Goal 6: Clean Water and Sanitation. Conversely, the United States benefits from more developed and regulated wastewater infrastructure, largely driven by the Clean Water Act of 1972. However, rural and economically disadvantaged areas, like the Black Belt region of Alabama, still use straight pipes, discharging untreated sewage directly into the environment, posing significant health and environmental risks. This comparative analysis highlights the importance of addressing social and economic disparities, technological advancements, and policy implementations to achieve sustainable wastewater management. By investing in infrastructure, enhancing regulatory frameworks, and promoting community engagement, both nations can work towards achieving SDG 6, ensuring availability and sustainable management of water and sanitation for all.