The study was carried out to determine households willingness to pay the, rate and level for the construction of sewer system in rural Vietnam. The results showed that percentage of households willingness to pay for constructing sewer system was 79.5 percent. The average price of households willingness to pay for constructed sewer system was approximately 1.8 million VND which accounted for 4 percent of households total income. The total households willingness to pay about was 3.2 billion VND. The significant correlates of the WTP rate were: Gender of the head of household
Education level of the head of household, age of the head of household
satisfaction with existing sewer. In conclusion, households were willingness to pay for constructed sewer systems in rural Vietnam.