Improving sanitation and wastewater treatment in Cambodia

7 January 2019
Asian Development Bank has selected Ramboll to conduct a large water and sanitation project that covers three towns and the UNESCO Heritage city of Angkor Wat.



Christian Nyerup Nielsen

Director, Climate Adaptation & Landscape
T: +45 51 61 62 77

By Martin Zoffmann

Cambodia has since the end of decades of conflict seen rapid economic and population growth, where the development of Cambodia’s water and sanitation infrastructure has fallen behind and presents a major public health menace. Asian Development Bank (ADB) is therefore investing significantly to improve sanitation and wastewater facilities and has recently selected Ramboll for a large project.

“The project will finance for sanitation subprojects in the city of Siem Reap, which is the UNESCO Heritage city of Angkor Wat, as well as in the three towns Battambang, Kampong Cham and Sihanoukville. Activities include a new wastewater treatment plant and new sewers in Battambang, a septage management system in Kampong Cham, expansion of the existing wastewater treatment system in Sihanoukville as well as a new trunk sewer in Siem Reap,” says Nils Gärdek from the International Water and Climate Resilience Department.

The objectives of Ramboll Water are to provide expert management support and advice to the Cambodian Ministry of Public Works and Transport responsible for managing and implementing the projects. 

According to ADB, Currently, only 42.2% of the urban population in Cambodia except Phnom Penh have access to piped water supply, while 80.2% have access to improved sanitation and only 10.7% have access to sewerage and wastewater treatment.

The new facilities are expected to be completed by the end of 2022.

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DK-2300 Copenhagen S
Tel:+45 5161 1000
Fax:+45 5161 1001

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