Themes / Topics Wastewater/Sanitation
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January 2, 2023 In

Drinking Water & Health in Rural Appalachia

We are working on a number of projects to better understand issues related to drinking water (access, quality, use), sanitation, and health in the Appalachia region. In 2020, we started a comprehensive systematic review and meta-analysis study to identify and synthesize published research on drinking water contamination and associated health outcomes in the Appalachian region over a 20-year time period. We pre-registered our study protocols and completed data extraction and analysis in 2022; we anticipate publishing this work in 2023 (as of the end of 2022 our manuscript was under review). In collaboration with UVA, ETSU, and others, we are also conducting two, small-scale, water-and-health focused prospective cohort studies in southwest VA. In 2022, we published initial findings from one of these studies (focused on a small community in one county), and we anticipate publishing preliminary findings from the other, larger-scale, study (households across two counties) in 2023. Given the relatively high rates of household bottled water use/reliance we observed, we are also conducting an additional study to analyze water quality parameters in bottled water sold in big-box and grocery stores in the region; we also anticipate publishing those findings in 2023.

July 21, 2022 In

Subsewershed SARS-CoV-2 Wastewater Surveillance & COVID-19 Epidemiology Using Building-specific Occupancy & Case Data

Abstract/Summary: To evaluate the use of wastewater-based surveillance and epidemiology to monitor and predict SARS-CoV-2 virus trends, over the 2020–2021 academic year we collected wastewater samples twice weekly from 17 manholes across Virginia Tech’s main campus. We used data from external door swipe card readers and student isolation/quarantine status to estimate building-specific occupancy and COVID-19 case counts at a daily resolution. After analyzing 673 wastewater samples using reverse transcription quantitative polymerase chain reaction (RT-qPCR), we reanalyzed 329 samples from isolation and nonisolation dormitories and the campus sewage outflow using reverse transcription digital droplet polymerase chain reaction (RT-ddPCR). Population-adjusted viral copy means from isolation dormitory wastewater were 48% and 66% higher than unadjusted viral copy means for N and E genes (1846/100 mL to 2733/100 mL/100 people and 2312/100 mL to 3828/100 mL/100 people, respectively; n = 46). Prespecified analyses with random-effects Poisson regression and dormitory/cluster-robust standard errors showed that the detection of N and E genes were associated with increases of 85% and 99% in the likelihood of COVID-19 cases 8 days later (incident–rate ratio (IRR) = 1.845, p = 0.013 and IRR = 1.994, p = 0.007, respectively; n = 215), and one-log increases in swipe card normalized viral copies (copies/100 mL/100 people) for N and E were associated with increases of 21% and 27% in the likelihood of observing COVID-19 cases 8 days following sample collection (IRR = 1.206, p < 0.001, n = 211 for N; IRR = 1.265, p < 0.001, n = 211 for E). One-log increases in swipe normalized copies were also associated with 40% and 43% increases in the likelihood of observing COVID-19 cases 5 days after sample collection (IRR = 1.403, p = 0.002, n = 212 for N; IRR = 1.426, p < 0.001, n = 212 for E). Our findings highlight the use of building-specific occupancy data and add to the evidence for the potential of wastewater-based epidemiology to predict COVID-19 trends at subsewershed scales.

October 18, 2021 In

Poverty, Water, Climate Change, & Health in Sub-Saharan Africa

As described below (see other project summaries), the Multidimensional Poverty Assessment Tool (MPAT) was created in two phases (from 2008 to 2014) via a collaborative, international initiative to develop, test, and pilot a new tool for local-level rural poverty assessment. The work was guided by a Sounding Board of experts from the International Fund for Agricultural Development (IFAD), other United Nations agencies, international and regional organizations, and universities around the world (see www.ifad.org/mpat). Following MPAT’s finalization and institutionalization in 2014, it was used in multiple countries including many in Sub-Saharan Africa. We are currently working on multiple desk-based studies with a variety of collaborators to analyze data from ~7,000 households across Eswatini, Kenya, Lesotho, Mali, Tanzania, and Zimbabwe. Because MPAT was developed based primarily on data from Bangladesh, China, India, and Mozambique, one study we are leading is an updated assessment and evaluation of MPAT’s indicator structure and robustness based on its use in the sub-Saharan region. Other studies we are working on focus on a cross-county analyses of MPAT’s water, climate change, and health focused components and sub-components, and related programs and interventions. We anticipate publishing a number of papers on this research in 2023 and 2024.

October 18, 2021 In

Wastewater Surveillance & Epidemiology at Multiple Scales

Our group is working on a number of wastewater focused research projects. Over the 2020/21 academic year, Dr.s Pruden & Vikesland (pictured) in Environmental Engineering led an initiative with collaborators across Virginia Tech (and at HRSD) to collect and analyze wastewater samples from different buildings and sites across the university campus with the goal of developing a coronavirus disease-2019 (COVID-19) surveillance program. Wastewater surveillance has been used by many other research groups, as well as wastewater utilities, to monitor SARS-CoV-2 (i.e., the virus that causes COVID-19) trends. Our primary research objective for that study was to evaluate the use of wastewater-based surveillance and epidemiologic methods to monitor and predict SARS-CoV-2 virus trends at sub-sewershed scales. Using pre-specified methods, our analyses showed that the detection of SARS-CoV-2 genes in wastewater samples was associated with statistically significant increases in COVID-19 cases 8 days after sample collection. We published our methods and findings from this research in 2022 and continue to collaborate and expand on this work in other settings. Starting in 2020, our group also supported wastewater surveillance efforts led by colleagues at the Virginia Department of Health (Dr. Degen) the Roanoke Health District, UVA (Dr. Taniuchi), and Radford University (Dr. Tolliver). In the summer of 2022, our research group (in collaboration with other VT faculty, students, and Dr. Taniuchi’s group at UVA) initiated a new wastewater surveillance and epidemiology study in collaboration with a wastewater utility in southwest VA; we started a monthly sub-sewershed sampling campaign in September 2022, and anticipate publishing initial findings from this project by/before 2024.

March 1, 2021 In

Refinement & Finalization of the Multidimensional Poverty Assessment Tool (MPAT)

Following the release of the working-paper User’s Guide for the Multidimensional Poverty Assessment Tool (MPAT) in 2009, a number of agencies and universities used the beta-version of MPAT in a variety of settings. In order to finalize MPAT and develop a comprehensive User’s Guide and associated resources, we built on the lessons learned from early adopters of the the tool (e.g., an NGO in Kenya) and iteratively used and evaluated the tool with IFAD-supported projects in Bangladesh and Mozambique. Details on the participatory expert elicitation methods we used are provided in a Journal of Development Studies paper. We developed an Excel-based data entry platform so users could easily calculate MPAT’s indicators at household, village, and project levels. We also wrote a comprehensive, 300+ page, 2014 MPAT User’s Guide which provides step-by-step instructions for using MPAT as well as training modules and materials, all with the goal of making MPAT an accessible open-source tool. The User’s Guide and accompanying resources were presented at a 2014 launch event in Rome. Since its 2014 release, MPAT has been translated into a number of languages, an optional 11th component focused on climate change was added, and MPAT has been used by a variety of agencies and institutions around the world. MPAT publications and related resources are available at www.ifad.org/mpat.

March 1, 2021 In

Wastewater & Coastal Environmental Health in the Philippines

This research collaboration between colleagues at the University of California Berkeley (UCB) and the University of the Philippines (UPD) was designed to advance methods for measuring, modelling, and assessing marine water quality and environmental health at three sites in the Philippines. One of the three study sites for this multi-year project is Boracay Island. A popular tourist destination, in recent years sewage and other contaminants have adversely impacted Boracay’s beaches and coastal water quality, with implications for both environmental and human health. This research project centers on the use of an autonomous surface vessel to collect a wide range of spatially referenced data which can be combined with data from water samples and lab-based analyses, as well as satellite and other remote sensed data. At the Boracay site, proxy sensor data (e.g., optical brighteners and tryptophan) and laboratory analyses of grab samples will be combined to map and model actual and estimated water quality and environmental health impacts from point and non-point runoff and wastewater effluent. Our planned research activities and associated timelines suffered from a variety of logistical setbacks and delays, as well as delays related to the COVID-19 Pandemic. We anticipate publishing findings from this work starting in 2023.

December 31, 2020 In

Developing a Thematic Indicator for Rural Poverty Assessment (MPAT)

The Multidimensional Poverty Assessment Project was a collaborative, international initiative to develop, test, and pilot a new tool for local-level rural poverty assessment. The work was supported by IFAD and guided by a Sounding Board of experts from IFAD, other United Nations agencies, international and regional organizations, and universities around the world, with the majority of its members coming from the Asia region where we developed and tested the tool in China and India. Surveys (household and village level) were developed and tested in an iterative and participatory fashion, as was the indicator structure used to aggregate sub-components and components. The resulting Multidimensional Poverty Assessment Tool (MPAT) provides an assessment, an overview, of ten dimensions central to rural livelihoods, highlighting where additional support or interventions are likely to be most needed. The tool was designed to be universal enough to be relevant to most rural contexts around the world, yet specific enough to provide project managers and others a detailed overview of key dimensions relevant to rural poverty reduction efforts. MPAT was independently evaluated by the European Commission Joint Research Center and a working-paper version of MPAT User’s Guide was released in 2009 as well as the 2009 MPAT Book, which provides a detailed description of why and how the tool was developed. MPAT’s theoretical foundations are described in a 2010 article in Development and Practice.

November 16, 2020 In

Implementation of Water Safety Plans in China: 2004-2018

Abstract/Summary:The application of Water Safety Plans (WSPs) in China varies throughout the country. Although pilot WSP projects in China were initiated shortly after WSP was introduced by the World Health Organization (WHO) in 2004, they have yet to be used for water supply facilities at a large scale. To better understand the evolution of WSP application in China, a systematic review was conducted to identify all published WSP related studies in China. Eighteen studies, which included 311 water systems, were included in the final analysis. Risk matrix, water supply risk factors, and other data were extracted and analyzed. Text mining methods were also used to better understand risks that can be addressed by WSPs (both potential and actual risks). This study revealed a number of noteworthy differences between and among urban and rural water systems in China. The primary risks associated with most urban water supply systems tended to be related to mechanical failure/s in the water treatment process. Rural water supply systems appear to suffer from similar problems, but insufficient overall management capacity was more prevalent in rural systems. Overall, the evidence suggests that, to date, the use of WSPs in China has been primarily limited to pilot studies, and full implementation of WSPs in China appears to still be in the early stages. The paper closes with a summary of the key obstacles identified as well as a discussion of policies and technical options which could increase the use of WSPs in both urban and rural China. Among other recommendations, the data indicate that there is strong need for the development and implementation of a simplified WSP approach designed specifically for small rural systems in China.

November 16, 2020 In

The Multidimensional Poverty Assessment Tool: Brochure (& Infographics)

Abstract/Summary: The Multidimensional Poverty Assessment Tool (MPAT) provides data that can inform all levels of decision making by providing a clearer understanding of rural poverty at the household and village level. As a result, MPAT can significantly strengthen the planning, design, monitoring and evaluation of a project, and thereby contribute to rural poverty reduction.

This brochure explains:

    • What MPAT is
    • How MPAT works
    • When to use MPAT and why
    • How to use MPAT
    • What resources are available for implementing MPAT

The tool allows project managers, government officials, researchers and others to identify and monitor sectors that require support in order to reduce rural poverty and improve livelihoods. It also provides an objective means of justifying resource allocation or planning priorities. MPAT is based on a bottom-up, participatory approach that reflects communities’ voices, wants and perspectives.

November 16, 2020 In

The Multidimensional Poverty Assessment Tool: User’s Guide

Abstract/Summary: The Multidimensional Poverty Assessment Tool (MPAT) provides a method for simplifying the complexity of rural poverty in order to support poverty alleviation efforts. MPAT uses thoroughly designed and tested purpose-built surveys to collect data on people’s perceptions about fundamental and interconnected aspects of their lives, livelihoods and environments. Standardized indicators, developed through a comprehensive participatory process, are then employed to combine, distil and present these data in an accessible way. MPAT was developed through a participatory, collaborative process based on expert feedback from dozens of international development experts from IFAD, other United Nations agencies, international and regional organizations, and universities from around the world. It was field-tested in countries in both Asia and Africa. In the pages that follow, we explain what MPAT is, how it works and how it is used, providing step-by-step instructions, training materials and other resources. The ultimate objective of this User’s Guide and the accompanying Excel Spreadsheet is to make MPAT a truly free and open-source tool, so that any institution or agency, big or small, may implement MPAT on its own.