Category Archives: Uncategorized

The social dynamics around shared sanitation in an informal settlement of Lusaka, Zambia

The social dynamics around shared sanitation in an informal settlement of Lusaka, Zambia. Journal of Water, Sanitation and Hygiene for Development, March 2019.

This study explored the social dynamics affecting collective management of shared sanitation in the Bauleni compound of Lusaka, Zambia. In-depth interviews were conducted with landlords (n = 33) and tenants (n = 33). Elinor Ostrom’s eight design principles for the management of common-pool resources was used as a framework to analyse the data. jnl

Social capital within plots was also assessed. Pit latrines were predominantly shared by landlords and tenants on residential plots. However, unwelcome non-plot members also used the latrines due to a lack of physical boundaries. Not all plot members fulfilled their cleaning responsibilities equally, thereby compromising the intended benefits for those conforming. Landlords typically decided on latrine improvements independent of tenants.

Latrines were not systematically monitored or maintained, but punishment for non-conformers was proportionate to the level of infraction. There was no system in place for conflict resolution, nor local organizations to regulate the management of sanitation. Lastly, there were few enterprises associated with peri-urban sanitation.

Social capital was moderately high, and tenants were willing to invest money into improving sanitation. The social dynamics illuminated here provide an important basis for the development of a behavioural intervention targeted towards improving urban sanitation.

WSUP – Institutional change in the urban WASH sector

Institutional change in the urban WASH sector. WSUP, March 2019.

This Discussion Paper examines the theory and practice of supporting change processes in urban water and sanitation institutions – a chain of actors that includes local governments, water utilities, and a mix of private and public service providers – to help them reach all urban citizens, including the poorest, with water and sanitation services. wsup

The report presents findings from a literature review of institutional change processes in the WASH sector, supplemented by case studies of WSUP’s work and interviews with WSUP staff that explore their personal experiences of participating in institutional change interventions.

Black Soldier Fly biowaste treatment – Assessment of global warming potential

Black Soldier Fly biowaste treatment – Assessment of global warming potential. Waste Management, Volume 84, 1 February 2019, Pages 173-181.

Cities of low and middle-income countries face severe challenges in managing the increasing amount of waste produced, especially the organic fraction. flies

Black Soldier Fly (BSF) biowaste treatment is an attractive treatment option as it offers a solution for waste management while also providing a protein source to help alleviate the rising global demand for animal feed.

However, to-date very little information is available on how this technology performs with regard to direct greenhouse gas (GHG) emissions and global warming potential (GWP).

This paper presents a study that uses a life cycle assessment (LCA) approach to assess the GWP of a BSF waste treatment facility in the case of Indonesia and compares it with respective values for an open windrow composting facility. Direct CH4 and N2O samples were extracted from BSF treatment units and analyzed by gas chromatography.

Results show that direct CO2eq emissions are 47 times lower the emissions from composting. Regarding the overall GWP, the LCA shows that composting has double the GWP of BSF treatment facility based on the functional unit of 1 ton of biowaste (wet weight).

The main GWP contribution from a BSF facility are from: (1) residue post-composting (69%) and (2) electricity needs and source (up to 55%). Fishmeal production substitution by BSF larvae meal can reduce significantly the GWP (up to 30%).

Based on this study, we conclude that BSF biowaste treatment offers an environmentally relevant alternative with very low direct GHG emissions and potentially high GWP reduction. Further research should improve residue post-treatment.


Child Defecation and Feces Disposal Practices and Determinants among Households after a Combined Household-Level Piped Water and Sanitation Intervention in Rural Odisha, India

Child Defecation and Feces Disposal Practices and Determinants among Households after a Combined Household-Level Piped Water and Sanitation Intervention in Rural Odisha, India. Am Jnl Trop Med Hyg, Feb 18.

Significant predictors for disposing of child feces in an improved latrine were the primary female caregiver reporting using a latrine to defecate, the child’s age, and water observed at place for handwashing.

These findings suggest that child feces interventions should focus on encouraging children to begin using a toilet at a younger age and changing the common behavior of disposing of young child’s feces into open areas.

Environmental enteric dysfunction and child stunting. Nutrition Reviews, Feb 9

Environmental enteric dysfunction and child stunting. Nutrition Reviews, Feb 9. The failure of polarized interventions to reduce stunting may lie in the rationale that the 3 main underlying causes—namely poor quality and quantity of food, poor care practices, and infectious disease—are either directly or indirectly related to inadequate WASH infrastructure and facilities.

The following sections aim to describe this relationship between linear growth failure and WASH and the reasons for the limited success of WASH interventions thus far to prevent stunting worldwide.

Evaluating the Potential of Container-Based Sanitation – World Bank

Evaluating the Potential of Container-Based Sanitation. World Bank, February 2019.

In the face of urbanization, alternative approaches are needed to deliver adequate and inclusive sanitation services across the full sanitation service chain. Container-based sanitation (CBS) consists of an end-to-end service—that is, one provided along the whole sanitation service chain—that collects excreta hygienically from toilets designed with sealable, removable containers and strives to ensure that the excreta is safely treated, disposed of, and reused. cbs

This report builds on four case studies (SOIL – Haiti, x-runner – Peru, Clean Team – Ghana, Sanergy – Kenya) to assess the role CBS can play in a portfolio of solutions for citywide inclusive sanitation (CWIS) services.

The authors conclude that CBS approaches should be part of the CWIS portfolio of solutions, especially for poor urban populations for whom alternative on-site or sewer-based sanitation services might not be appropriate.

Customer satisfaction with existing services is high and services provided by existing CBS providers are considered safe but have some areas for improvement. While the proportion of total CBS service costs covered by revenues is still small, CBS services are considered to be priced similarly to the main sanitation alternatives in their service areas.

Recommendations include adopting a conducive policy and regulatory environment and exploring ways to ensure that CBS services are sustainably financed. The report also identifies areas for further analysis.

Frontiers 12: Rural Sanitation in Africa: Challenges, Good Practices and Ways Forward

Frontiers 12: Rural Sanitation in Africa: Challenges, Good Practices and Ways Forward In order to achieve universal safely managed sanitation across Africa by 2030 the scale and pace will need to increase drastically. clts

This edition of Frontiers of CLTS draws on the discussions held across two regional Africa events in 2018, highlighting the challenges faced by programme implementers (both government and non-government staff) at different levels in relation to the Ngor Commitments and the achievement of universal access to safely managed sanitation.

A range of initiatives are presented that show promise in addressing these challenges, along with recommended priority actions.