Many global development initiatives focus on improving access to safe and affordable water. Governments and infrastructure in rapidly urbanizing cities struggle to meet the increased demand for water, especially in peri-urban and informal settlements of sub-Saharan Africa. The private sector, in the form of small water enterprises (SWEs), plays an increasing role in satisfying demand for water, but their greater effects have seldom been investigated. This research explores how SWEs affect access to household water in a peri-urban settlement of Accra, Ghana and investigates their social, economic, and environmental impacts in the community. This research also examines how SWEs influence security and sustainability goals within the framing concepts of the US Army’s Stability doctrine and the United Nations Sustainable Development Goals (SDGs). The methods employed in this study were interviews, observation, and review of existing literature and case studies. Results of this qualitative analysis reveal that while SWEs increase and diversify local access to clean water, provide economic opportunities and jobs—especially to women—they also present environmental and health concerns when unregulated and unaddressed by educators, city officials, and community leaders. Further, in cases where municipal governments cannot provide safe and consistent access to clean water in the given location, results show that SWEs enterprises can work in cohesion with both the SDGs and the US Army stability goals. Moving forward, city officials, development programs, and US Army stability doctrine should consider supporting SWEs to increase water access and improve other developmental outcomes, while working to avoid potentially negative environmental and health outcomes.

As the demand for natural resources increases with population growth, importance has been placed on environmental issues due to increasing pressure on land, water, air, and raw materials. In order to sustain the environment and natural resources, sustainable engineering and earth systems engineering and management (ESEM) is vital for future populations. The Aral Sea and the Florida Everglades are both regions that are heavily impacted by human design decisions. Comparing and analyzing the implications and outcomes of these human design decisions allows conclusions to be made regarding how earth systems engineering and management can be best accomplished. The Aral Sea, located in central Asia between Kazakhstan and Uzbekistan, is a case study of an ecosystem that has collapsed under the pressure of agricultural expansion. This has caused extensive economic, health, agricultural, and environmental impacts. The Everglades in southern Florida is a case study where the ecosystem has evolved from its original state, rather than collapsed, due to human settlement and water resource demand. In order to determine effective sustainable engineering approaches, the case studies will be evaluated using ESEM principles. These principles are used as guidance in executing better practice of sustainable engineering. When comparing the two case studies, it appears that the Everglades is an adequate representation of effective ESEM approaches, while the Aral Sea is not reflective of effective approaches. When practicing ESEM, it is critical that the principles be applied as a whole rather than individually. While the ESEM principles do not guarantee success, they offer an effective guide to dealing with the complexity and uncertainty in many of today's systems.