Abstract
It is legal duty to connect sewerage system for households when sewerage system is developed. However, it is expensive to reconstruct toilet and discharge system in a house. Therefore, sewerage systems are not sufficiently used. The household behavior to use newly developed sewerage system is studied considering household income, cost to use the system and household remained lifetime. Logit model to describe the household choice of wastewater treatment system was investigated. The questionary survey was carried out and model parameters were estimated. Using the model the using rate of sewerage system was explained.
