Imperial College London

Dr Laure Sione

Faculty of EngineeringDepartment of Civil and Environmental Engineering

Research Associate



+44 (0)20 7594 6789laure.sione09




Skempton BuildingSouth Kensington Campus





Publication Type

4 results found

Jantarakasem C, Sione L, Templeton MR, 2024, Estimating drinking water turbidity using images collected by smartphone camera, AQUA - Water Infrastructure, Ecosystems and Society, Vol: in press

Journal article

Sione L, Gibson W, Beckett P, Oak A, Sathre R, Furlong C, Bastable A, Batarda C, Templeton MRet al., 2023, Taking Tiger Worm Toilets to scale: opportunities and challenges, Frontiers in Environmental Science, Vol: 11, ISSN: 2296-665X

Tiger Worm Toilets (TWTs) are a relatively recent innovation in sanitation technology, with the potential to offer affordable and safely managed on-site sanitation for underserved communities in line with Sustainable Development Goal 6. This article, authored by members of the International Worm-Based Sanitation Association (IWBSA), presents the state-of-the-art in TWT construction and operation based on frontier global experiences to-date, stemming from both knowledge from literature and the practical knowledge imparted by the authors, who were involved in the birth of this technology and are still active in the research and deployment of it today. The focus of this paper is on the implementation of TWTs to solve sanitation challenges in least-developed and lower-middle income countries specifically. The design of TWTs can be adapted to a wide range of environmental conditions including high water tables and rocky ground conditions, and in both rural and urban contexts. The challenge for TWTs therefore lies primarily in creating opportunities for scaling the uptake of this promising technology. Our article discusses the key barriers to this, identified to be broadly categorised as user preference, capacity and capability building, and governmental support–and proposes how to overcome these.

Journal article

Sione L, Bastable A, Ampilan A, Templeton MRet al., 2023, Lessons learned from a Tiger Worm Toilet implementation project in Sierra Leone, Journal of Water, Sanitation and Hygiene for Development, Vol: 13, Pages: 604-609, ISSN: 2043-9083

This paper discusses the implementation of Tiger Worm Toilets (TWTs) as a sustainable alternative to pit latrines in areas with challenging environmental conditions. The study was carried out in Koinadugu, Sierra Leone, where TWTs were installed in 200 households, providing safe sanitation for approximately 1,200 individuals within a 17-month period. The study reveals that TWTs offer several benefits over traditional pit latrines, including higher cost efficiency. Despite some setbacks, TWTs have been well-received by the local communities, resulting in a significant reduction in open defaecation in areas where latrines are not viable. The study presents areas of further research and concludes with recommendations for future TWT designs based on the lessons learned.

Journal article

Sione L, Templeton MR, Onof C, Jensen O, Bressan S, Tripathi Set al., 2022, Can a citizen science approach to collecting data assist the management of intermittent water supply in low-income and data-scarce settings?, Waterlines, Vol: 41, Pages: 1-19, ISSN: 0262-8104

Intermittent water supplies (IWS) can be both a public health threat and an expensive challenge to address for households, requiring reliance on either costly water storage solutions or alternative water supplies. Despite the fact that IWS are present all over the world, there remains a persistent lack of data on the operation and failures of urban water supply infrastructure in low-income countries. Local government and water utilities tend to be blamed for the poor management of the water supply, and yet there is no established method for reporting or measuring the continuity, reliability, or hours of supply of pipe water delivery. This makes it difficult for water utilities to estimate real economic losses or the investment needed to improve the water supply. Lack of evidence and data on the behaviour of IWS also impedes the development of tailored water management policies, leading to inefficient decision-making from the top down. This paper therefore proposes a method to address the knowledge and data gap on IWS in low-income settings, using citizen science coupled with mobile phone technology to collect data on IWS in a bottom-up approach. The approach was trialled in Kathmandu, Nepal and has since been adopted by the local water supply company.

Journal article

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