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As a key part of our Asia-Pacific focus, EWB Australia has worked with communities in Cambodia since 2005 to create positive social impact.
Population: 16 million
Capital City: Phnom Penh
Language: Khmer

Cambodia is a country continuing to work towards addressing its challenges. Whilst having benefited from three decades of relative stability after civil war and the 1970s genocidal rule of the Khmer Rouge, health and education remain important challenges and development priorities.


rural residents that have access to sources of improved drinking water (>90% in urban areas)


rural residents that have access to improved sanitation facilities (~80% in urban areas)


have access to and use safely-managed drinking water


have access to and use electricity

* Sources: World Health Organisation; Asian Development Bank

Our Work

EWB Australia works to improve the quality of life of people living and working in disadvantaged communities in Cambodia. Our work is impact-led, with a focus on positive, sustainable and long-term change. We do this within local communities, to ensure we build the capacity of the people who live and work in them. Through this approach, we have established long-term relationships with local organisations with whom we partner, to ensure the solutions developed are evidence-based, relevant and, importantly, approved by each community. 

In Cambodia, we work across a specific range of thematic programs, including Water, sanitation & hygiene (WASH), Education & TrainingEngineering Education, Inclusive Design and Clean Energy.

Our Impact

EWB Australia in Cambodia is currently engaged in a range of technical solution and sector & systems-strengthening projects.

    Our Team

    Key to this work are our in-country EWB Australia staff and our volunteer Field Professionals.

    Our Field Professionals are technical or thematic specialists who volunteer to work in-country to provide critical expertise, mentoring and capacity-building. These technical professionals are not only skilled in the development of appropriate systems and solutions, but also in community-led design and engagement. Our Field Professionals work alongside our in-country staff, or within our local partner organisations. Via this collaborative response, we enable and empower remote Cambodian communities to only tackle the issues that are relevant and of priority to their communities. 

    Many Dy
    Many Dy
    Country Manager
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    Ratha Kong
    Ratha Kong
    Senior Technology Development Lead

    From Cambodia, Ratha has over 6 years’ experience working in the WASH sector, especially urban and rural water supply in technical design and management. Ratha has been involved in numerous projects with organisations such as the World Bank, UNICEF, ADB and Australian Aid. He is passionate about sharing his knowledge and experiences with communities locally and overseas in countries such as Myanmar and the Philippines. Ratha holds an engineering degree in Water Resources and Rural Infrastructures from the Institute of Technology of Cambodia. He is currently studying a Masters of Business Administration at the National University of Management in Cambodia. Ratha’s hobbies include playing football, basketball, marathons and music.

    Mariny Chheang
    Mariny Chheang
    Technology Development Specialist

    Mariny holds a masterʼs degree in Environmental Engineering at Chulalongkorn University (Thailand) and a bachelorʼs degree in Water Resources Engineering and Rural Infrastructures at ITC (Cambodia). She has experience in working in water/ wastewater treatment, air pollution, and hydrology. As a Technology Development Specialist with EWB Australia in Cambodia, Mariny focuses on developing, trialling and delivering appropriate technology for communities in rural areas, to improve water in Sanitation in Challenging Environments and mobility.

    Prak Pin
    Prak Pin
    WASH Project Manager - Sanitation in Challenging Environments (SCE)

    Pin has over 20 years’ experience in project implementation and management of humanitarian, water and sanitation and hygiene. He has extensive general WASH techniques and tools including PHAST, CLTS, WASH education, incorporate Disaster Risk Reduction and Emergency Preparedness in WASH.

    Chanrika Keo
    Chanrika Keo
    Program Support Officer

    Chanrika graduated in bio-engineering in 2019. She has been involved with EWB since 2018 through participating in the EWB internship program with ATEC Biodigesters. As an EWB alumni, Rika also attended the EWB design workshop and critical thinking course in 2019. With a passion for human-centred design skills and critical thinking, Rika volunteered to co-facilitate school outreach workshops and was a leader of the critical thinking team in 2019 and 2020. She always starts her mornings with 15 minutes of yoga; and the perfect weekend is spending the whole day with family in their home town, cooking and trying new dishes together – and playing with the dogs and kittens.

    Mengheang Hak
    Mengheang Hak
    Assistive Technology Officer

    Mengheang holds a Master’s Degree in Mechanical Engineering from The Institut Teknologi Bandung (Indonesia) and a Bachelor’s Degree in Industrial and Mechanical Engineering from ITC. Mengheang is skilled in mechanical design, data analysis and simulation, producing prototypes and testing, and project management. In his role as the Assistive Technology Officer, Mengheang supports the analysis, concept designs, prototypes, trials, evaluation, and progress control of products for innovative technology solutions for people living with disabilities. In his spare time, Mengheang enjoys listening to music, reading, playing football and going for trips with his family.

    Our Partners

    Our Cambodia programs are supported by the Australian Government through the Australian NGO Cooperation Program (ANCP). Since 2005, EWB Australia has worked with over 14 partners in Cambodia and are currently working alongside:

    Other Programs

    Alongside our Community Program within Cambodia, EWB Australia facilitates a range of education, research and training programs for Australian students and professionals that aim to broaden awareness about the challenges in Cambodia and mobilise expertise to create even more opportunities for impact.

      Impact Stories

      Sanitation solutions for hard ground environments in Cambodia 15 November, 2022 - Despite significant progress over the years to increase access to rural sanitation services, Cambodia continues to report the highest rate of open defecation in the region. In 2011, to address the many health and environmental issues associated with open defecation, the government of Cambodia announced an ambitious target to reach 100 percent coverage of rural… read more
      Announcing our 2023 EWB Challenge community partner 18 October, 2022 - Photo caption: Technology Development Specialist Mariny Chheang and Program Support Officer Chanrika Keo leading a female focus group with Pu Ngaol village members.  Each year, over 10,000 first-year university students across Australia and New Zealand participate in the EWB Challenge.  Students work in teams to develop a solution to challenges identified by EWB Australia’s community-based… read more
      Using human-centred design tools in community 24 August, 2022 - Feature image: EWB Technology Development Lead Mitch Horrocks at a participatory design workshop in Darlau, Timor-Leste in May 2022.  Over 3,500 people have directly benefited from new, appropriate technology that EWB has been involved in implementing in Cambodia, Timor-Leste and Vanuatu during the past year. Almost 2000 community members have actively participated and contributed to… read more