A qualitative analysis on implementing the sewer system for an indigenous village in the influence area of Belo Monte Hydroelectric Plant (Brazil)

In this article, the project and implementation of the sewer system in the Paquiçamba Village, as a condition for environmental licensing, was investigated. This village is surrounded by the influence of the Belo Monte Hydroelectric Plant (Brazil). This research aimed to characterize the context of ethnodevelopment, thus recognizing the social participation of the indigenous people. The research within a qualitative approach between 2009 and 2018 was based on primary data sources (through structured interviews) and secondary data (electronic files related to the environmental licensing). Data were analysed according to descriptive, focused and selective observations until reaching theoretical saturation. The organization of the data was followed by the organization of the themes, which formed a spiral of interconnected activities based on Creswell's proposal (2014). It was detected that indigenous involvement occurred at some moments in the elaboration of the sewage system project. The maintenance of ancestral habits in the disposal of excreta by a portion of the indigenous people, even with the sewage system in place, makes it essential to broaden the debate on the projects proposed on the environmental licensing processes. The Indigenous can not only have a consultative role, but assume a deliberative participation, being protagonists in conducting their own development.

The sanitation arc: an alternative examination of WASH behavior change

A primary goal of the WASH sector is to facilitate transitions from open defecation to improved sanitation. Many residents of low-income countries desire improved sanitation but lack the resources to obtain or maintain access to toilets. For such persons, describing the goal as ‘behavior change’ implies a deficiency in mindset, failing to capture contextual factors affecting sanitation access. Furthermore, household circumstances affect movement both up and down the sanitation ladder, a phenomenon that the sector tends to overlook. This study, based on interviews with 308 former subscribers to Haitian container-based-sanitation service EkoLakay, tracks household sanitation access at four points in time: prior to subscribing, during the subscription period, immediately upon unsubscribing, and at the time of interview. We describe this movement through time as the ‘sanitation arc’. Prior to subscribing, households were more likely to practice open defecation or rely on non-household sanitation, and less likely to have private improved sanitation than the average urban Haitian. This distribution is reversed among former subscribers. Nearly half of former subscribers, however, could not afford continuous access to EkoLakay; 80% of involuntary terminations resulted in loss of access to private improved sanitation, and over one-third of these households reverted to open defecation.

Water and sanitation influence on child health in Namibia: using demographic and health surveys

Important milestones in reducing child mortality rates have been achieved internationally and in Africa. With 76 deaths per 1,000 live births, sub-Saharan Africa (SSA) continues to have the world's highest under-five mortality (U5M) rate. In SSA, one child in every 13 dies from preventable causes before reaching their fifth birthday. This study sought to determine the impact of demographic, socio-economic, and environmental determinants on child health in Namibia, using the Namibian demographic and health surveys (NDHS) from 2006 and 2013. A logistic regression model was used to determine the association between improved sanitary facilities and water sources and U5M in Namibia. Improved access to sanitation facilities in Namibia is associated with less U5M rate, according to the 2013 survey. No significant association was observed between improved access to safe water and child's death. In 2013, the greater the mother's level of education, the lower the chance of child death. Finally, the findings demonstrate that mothers with HIV-positive are more likely to experience under-five death. Hence, the Namibian government should increase sanitation facilities and promote maternal healthcare services for less fortunate households to lower the U5M rate.

In situ treatment technologies for pit latrines to mitigate groundwater contamination by fecal pathogens: a review of recent technical advances

On-site sanitation systems such as pit latrines are extensively used around the world, while there is a growing number of evidence documenting the impact of pit latrines on groundwater quality that may affect human health. Hence, this paper summarizes the various safe-sanitation technologies by broadly categorizing them into fecal pathogen disinfection methods (anaerobic digestion, chemical disinfection, biological additives, solar pasteurization and vermicomposting) and capturing methods (pit lining and permeable reactive barriers, the latter of which simultaneously capture and sanitize fecal sludge in pit latrines). While some of the reviewed technologies have been widely practiced for mitigating microbial contamination of the groundwater, others are still in the early stage of commercialization and field validation. Though there are challenges to the selection and adoption of the most appropriate technology, this paper discusses the readiness of each technology as a stand-alone fecal sludge management solution.

Limited water access is associated with food insecurity and diarrheal episodes among children suffering from moderate acute malnutrition in Far-North Cameroon

To gain further understanding of the interlinkages between poor water access, household food insecurity, and undernutrition among children, this study used a cross-sectional design with 474 female caretakers of children suffering from moderate acute malnutrition (MAM) to explore the relationship between limited access to water and diarrheal diseases among children, aged <5 years, experiencing MAM. The mean age of the caretakers was 28.50±6.88 years and that of their MAM children (sex ratio=0.7) was 17.79±9.59 months. The participants reported spending an average of 19.29±15.69 min for one trip to fetch water. A negative correlation was found between mean time spent fetching drinking water and hygiene and handwashing score (r=−0.141, p=0.003). Furthermore, the more severe the food insecurity status of a household, the farther the family member likely had to go to fetch for drinking water [F(2, 444)=8.64, p≤0.001]. Results from binary logistic regression showed that children from households practicing open defecation (p=0.008) and/or having inadequate hygiene practices (p=0.004) had increased odds of developing diarrhea. Therefore, ameliorating water access in households with MAM children could contribute to improvements in hygiene and sanitation attitudes with a subsequent increase in the effectiveness of nutrition interventions aiming at reducing acute malnutrition among children.

Determinants of household water demand: a cross-sectional study in South West Nigeria

Estimating residential water demand in developing countries is complicated by the unique nature of water supply, characterised by unequal access and multiple water sources. Using cross-sectional data obtained from a survey of 1,300 households, the determinants of residential water demand were predicted using a multiple linear regression model. The determinants include access to water, household size, trip number, monthly income, payment for water, educational qualification, trip time and house type. The determinants predicted daily water consumption with an F(9, 1,014) = 81.063, P < 0.05, R2 = 0.450. Daily water consumption was found to be 2.8 times more per household and 4.4 times more per capita for those with on-site access, compared to those with off-site access. Moreover, consumption was influenced by the various water source categories.

Factors influencing physicochemical characteristics of faecal sludge in Phnom Penh, Cambodia

Comprehensive knowledge of faecal sludge characteristics is needed for sludge management planning, but it is lacking for the city of Phnom Penh, Cambodia. Thus, this study characterised physicochemical properties of faecal sludge from households in Phnom Penh and related these to sludge containment unit type, unit age, connectedness to the urban drainage network, type of wastewater captured, watertight containment units, number of users, and emptying practices. In total, 194 faecal sludge samples collected during containment unit emptying were analysed for physicochemical parameters. Information on containment units was collected in a survey of emptiers and users. Mean values of faecal sludge chemical parameters were found to be slightly lower than previously reported values for low-/middle-income countries, whereas physicochemical properties were within similar ranges. The main factor influencing organic matter content in faecal sludge was containment unit connection to the urban drainage network, whereas emptying practice and capture of only blackwater affected nutrient levels. The concentrations of nutrients and organic pollutants greatly exceeded Cambodian discharge standards for wastewater. This causes environmental impacts, so treatment is needed before discharge. The faecal sludge characteristics and influencing factors identified here can serve as a baseline for sanitation stakeholders planning faecal sludge management systems in Phnom Penh and similar cities.

Willingness of boarding school students in Tanzania to employ point-of-use water treatment: a case study

Access to safe drinking water is a challenge for students in primary and secondary schools in Tanzania. Only 32.7% of primary and secondary schools in Tanzania have access to safe drinking water and the point-of-use water treatment is rarely used. The traditional water disinfection method by boiling is often limited in boarding schools due to cost and time constraints. The objectives were to assess the willingness and attitude of boarding school students toward the use of the alternative water treatment method and determine the quality of drinking water before and after the introduction of the new method. Chlorine tablets were used due to their availability, ease of use, cost, and effectiveness. Weekly evaluations on usage, performance, and acceptability of chlorine tablets were assessed on 42 randomly selected students over a 3-week period in parallel with water sampling and testing before and after using chlorine tablets. Before the introduction of chlorine, only 17% of the students were aware of chlorine tablets, and water sources tested positive for fecal coliform. After introducing the new method, there was a significant increase (p<0.05) in the attitude of students toward water treatment (100%), water quality (78%), and water consumption (67%). The work demonstrates the need to provide access to cost-effective household water treatment methods, especially in public schools that lack access to safe water.