In this paper, a lean based analysis was conducted to explore the potential improvement of citizens’ participation in environmental impact assessment (EIA). Three lean tools, namely muda, value stream mapping and gemba were used as a tool to analyze the EIA public participation process flow in Indonesia. Two information and communication technologies, which are web-based system and SMS-gateway, were proposed to improve the current steps and reduce the “non-value” added process. This paper and the associated result can be used by EIA-policy makers as well as project owner in the implementation of citizens’ participation to reduce the waste in the public involvement process.