Written by
Kieu Ly Doan
BORDA - LIRE
CBS and SBS integrated to JICA Vientiane Master Plan as a solution for wastewater treatment in the Lao PDR

The demand of wastewater treatment systems to improve the urban sanitation and the water environment in the Lao PDR is high. About 52 percents of the national population do not have access to ‘basic sanitation’ while 82 percent of schools do not have sanitation facilities in the Lao PDR¹. Poor sanitation, including hygiene causes at least three million disease epsodes and 6 thousand premature deaths annually¹. The low permeability of soil and high groundwater table in the Vientiane area results in many soak-aways failing to operate effectively, resulting in a discharge of sewage from tanks into drainage channels or low lying land². This results in polluted effluent overflows, environmental degradation and health hazards².