Recent History Provides Sustainable African Water Quality Project Insight

Small-scale projects to provide clean drinking water undertaken in the developing world can contribute to significantly improving the livelihood of rural communities. There has been a historical tendency to poorly plan such projects leading to an unsustainable future. Recent history indicates three simple steps to ensuring successful and enduring clean water projects. First, identification of need by the indigenous community provides ownership in the project. Second, a partnership between key individuals in the indigenous community with the donor provides for ambassadors on both sides of the project. Finally, an exit strategy by the donors for the indigenous communities ensures local sustainability for the future. The study site is the village of Geisha in northern Malawi, Africa. Sustainable implementation approaches are discussed in this case study as well as the various lessons learned. Improved project processes ensure sustainable small-scale water quality projects by donor organizations in developing countries

Can a precast pit latrine concrete floor withstand emptying operations? An investigation from Malawi

For fecal sludge from households in low- and middle-income countries to be treated offsite it needs to be removed, which can be greatly affected by the pit latrine floor design. However, it is unclear whether precast pit latrine concrete floors (latrine slabs) can withstand emptiers and their equipment. To investigate this issue, 28 prefabricated latrine slabs were purchased in two cities of Malawi. They were first visually evaluated, and then their compression strength was tested. Additionally, each seller was asked a series of questions to better understand their business, training, and construction practices. Results showed that households should perform due diligence to ensure that they are purchasing a safe precast latrine slab. Commonly reported problems included nonstandard reinforcement material and spacing, in addition to slabs that were not thick enough or were not large enough in diameter. The results of this research illustrate the inherent complexity in ensuring high-quality decentralized sanitation solutions and how one component, the user interface, if implemented poorly, can affect the rest of the value chain. The findings from this work can help inform training and initiatives that engage artisans and suppliers who play a role in the provision of onsite sanitation service delivery

From the field: Using a simple guide to help students write better abstracts

Students in science, technology, engineering, and mathematics (STEM) often write abstracts for research assignments but may not understand the purpose of an abstract. This paper presents the pilot of a simple guide for writing abstracts which gave student support to two undergraduate Malawian ELL students for their undergraduate research assignment. The two students and the instructor found the handout was helpful for the students to develop technical writing skills for the abstracts

A review of the financial value of faecal sludge reuse in low-income countries

Faecal sludge reuse could promote responsible waste management and alleviate resource shortages. However, for this reuse to be carried out at scale, it needs to be financially viable. This paper reviews the financial values of resource recovery from 112 data points from 43 publications from academic and grey literature. The results found 65% of the existing literature is projected rather than being based on observed data from products in practice, with limited studies providing actual experiences of revenue in practice. Some of the estimates of the potential value were ten times those observed in data from operating businesses. Reasons for this include pricing of products against unrealistic competitors, for example, pricing briquettes against diesel fuel, or difficulties in marketing or regulation of products in practice. The most common form of reuse in practice is agricultural composting, which is also the lowest value product. Few cases were able to achieve more than $5/person/year from sludge reuse, therefore other drivers are needed to promote proper human waste disposal, including the health and dignity of citizens, but which are not easily monetised. Certification and recognition of product safety can improve the perception of value and products. Resource recovery has a limited role in the financial viability of providing Circular Economy sanitation in low-income countries. Instead, there is a need to focus on supportive policies and subsidies enabling the transition towards a Circular Economy supporting environmental quality, ecological health and human health

Faecal sludge management in peri-urban Malawi: investigating the policy gaps

Faecal Sludge Management (FSM) in peri-urban settlements of most developing countries has gained recent attention. This is due to rapid urbanisation resulting in the mushrooming of informal settlements and onsite household sanitation facilities where there is a lack of sewer systems. A number of initiatives aimed at improving FSM have been reported in South Africa, Uganda, Senegal, Mali, Ivory Coast and Burkina Faso. Yet, the main focus in these countries has been emptying and disposal/treatment of faecal sludge. Little has been done on policy formulation to guide stakeholders on what should be done at each stage of the sanitation chain. This paper identifies the complementarities and antagonisms of existing pieces of legislation pulling lessons learned from other countries and how it applies to Malawi. The work also proposes Faecal Sludge Management Policy criteria for Mzuzu City Council in Northern Malawi and other similar situations worldwide

A comparative study of faecal sludge management in Malawi and Zambia: Status, challenges and opportunities in pit latrine emptying

This review paper covers the issues of pit latrine emptying national policies and regulations with a focus on Malawi and Zambia. With 2.4 billion people worldwide still lacking improved sanitation facilities, developing countries need to look at policy, regulation and practice for household sanitation service provision with a new lens. What happens “next,” when improved sanitation facilities eventually become full? An emphasis on faecal sludge management has multiplied this important issue in the past few years. The authors compare the pit latrine emptying situation in Malawi and Zambia with a focus on status, challenges and opportunities. To build this comparison, a desk review of national policies, local regulations and peer-reviewed journal papers was conducted. The paper concludes that existing national policies and regulations taking faecal sludge management into account are weak and have wide gaps in the two study countries. For the future, it is recommended, first, that household pit latrine emptying should be seen as an opportunity to address national sanitation gaps and, second, national policies and regulations need to be evaluated and updated

Agent-based modelling for simulation-based design of sustainable faecal sludge management systems

Re-using faecal sludge (FS) to generate value has the potential to contribute towards solving the issue of long term sanitation solutions in growing urban areas across sub-Saharan Africa; however, hitherto, no design tools have been available that are capable of simulating a system involving economic factors, complex social issues and environmental circumstances. We hypothesized that Agent-Based Modelling (ABM), when deployed with appropriate rigour, can provide such a tool. Extensive field work was carried out in a Malawian city, investigating the adoption of Skyloo above-ground composting toilets by households, and the operation of the municipal FS site. 65 semi-structured interviews and 148 household interviews, together with observations, were carried out to characterize these processes, with the data acquired being used to construct two separate ABMs. The Skyloo ABM was run for various scenarios of start-up capital for business and payback of loans against the toilet cost to households. The municipal FS Site ABM was run for different patterns of dumping fee and enforcement structure. The field work demonstrated that there is potential for further expansion of FS reuse, with a market for agricultural application. The Skyloo ABM identified the significance of start-up capital for a business installing the toilet technology; the municipal FS Site ABM showed that existing fees, fines and regulatory structure were insufficient to reduce illegal dumping of FS to any useful degree, but that a monthly permit system would provide enhanced revenue to the city council compared with per-visit charging of disposal companies at the municipal FS site. Whilst each ABM ideally requires some additional data before full application, we have, for the first time, shown that ABM provides a basis for the simulation-based design of FS management systems, including complex social, economic and environmental factors

Agent-based modelling for simulation-based design of sustainable faecal sludge management systems

Re-using faecal sludge (FS) to generate value has the potential to contribute towards solving the issue of long term sanitation solutions in growing urban areas across sub-Saharan Africa; however, hitherto, no design tools have been available that are capable of simulating a system involving economic factors, complex social issues and environmental circumstances. We hypothesized that Agent-Based Modelling (ABM), when deployed with appropriate rigour, can provide such a tool. Extensive field work was carried out in a Malawian city, investigating the adoption of Skyloo above-ground composting toilets by households, and the operation of the municipal FS site. 65 semi-structured interviews and 148 household interviews, together with observations, were carried out to characterize these processes, with the data acquired being used to construct two separate ABMs. The Skyloo ABM was run for various scenarios of start-up capital for business and payback of loans against the toilet cost to households. The municipal FS Site ABM was run for different patterns of dumping fee and enforcement structure. The field work demonstrated that there is potential for further expansion of FS reuse, with a market for agricultural application. The Skyloo ABM identified the significance of start-up capital for a business installing the toilet technology; the municipal FS Site ABM showed that existing fees, fines and regulatory structure were insufficient to reduce illegal dumping of FS to any useful degree, but that a monthly permit system would provide enhanced revenue to the city council compared with per-visit charging of disposal companies at the municipal FS site. Whilst each ABM ideally requires some additional data before full application, we have, for the first time, shown that ABM provides a basis for the simulation-based design of FS management systems, including complex social, economic and environmental factors

Food safety policies and practices in public spaces: The urban water, sanitation, and hygiene environment for fresh fish sold from individual vendors in Mzuzu, Malawi

In sub-Saharan Africa, informal markets account for more than 80% of the total food selling. Fish is a major protein source for households in Malawi and is commonly purchased from individual vendors. The aim of this study was to review national acts and policies and local regulations focused on fresh fish sold at open-air markets or by mobile vendors and to further examine the water, sanitation, and hygiene environment that may impact food safety in Mzuzu City, Malawi. The study used interviews, an observational checklist, and sampling of water and fish skin. In general, there was limited oversight of food safety where fresh fish are sold by vendors, and food safety guidance was inadequate. There was access to water in three of the four markets, but only two markets had safe water (0 cfu/100 ml for Escherichia coli). All vendors stored water in a container for use throughout the day to sprinkle over the fish with their bare hands to keep them from drying out. The mean washing water E. coli level was 700 cfu/100 ml. All fish skin samples (25/25) were positive for the presence of Salmonella spp., and most had high levels of E. coli. Sanitation facilities were available for vendors and customers in two of the four markets, but the use was limited. This research identified three key opportunities: (a) Regulatory framework including informal markets and mobile vendors; (b) Safe water, clean and functional toilets, and handwashing stations with soap at every market; and (c) Foodborne disease education for vendors