Water and Sanitation Corporation (WASAC) developed GIS system for rural water management by using FOSS4G software together with Japan International Cooperation Agency (JICA) since 2018. WASAC conducted the data collection by using QGIS and QField, then offline data sharing became available for all over the country of Rwanda until the JICA project ended in December 2019. Our achievements of the project was presented in FOSS4G 2019 Bucharest (see video). Although JICA project ended, WASAC still continue developing more advanced vector tiles’ based Web GIS system with former JICA expert - Jin IGARASHI. Our new online site is available here. Now all of our stakeholders can browse water supply data in Rwanda. We established this new web service for free of charge by using Github pages because of budget limitation. We also make our vector tiles data available as open data at Github and openAFRICA. This new vector tiles project was also developed under the technical support of The United Nations Vector Tile Toolkits.We would like to share how we are using this application to manage water and how we want to develop in the future.