This study is a quantitative research that aims to analyze and determine the ecological and economic valuation value of Bonleu water resources in South Central Timor district using the willingnes to accept method. This study is located in a place that uses primary data and secondary data collected using questionnaire methods, observation interviews and focus discussion groups and this study uses data analysis techniques in the form of descriptive statistical analysis methods and continuous valuation method (CVM) methods. The results of this study show that the level of education, land ownership, income, and the number of dependents in the family significantly affect and contribute to the public's perception of the need for environmental service rewards and the amount of environmental service rewards.

Oetune Beach and Kolbano Beach are types of natural tourism in South Central Timor Regency that have potential resources in the form of uniqueness and natural beauty. This study aims to identify factors that influence visitor demand using linear regression analysis and determine the economic value of the two attractions based on individual travel cost analysis (Individual Travel Cost Method/ITCM). Sampling was done using non probability sampling method form of accidental sampling technique on 120 respondents. The results showed that the variables of distance, time and income had a significant effect on Oetune Beach visits with a total economic value of Rp. 140,332,307,667/year, while Kolbano Beach showed that distance, time, education and transportation costs had a significant effect with a total economic value of Rp.  128,566,261,440/year. e first letter of the word phrase.