2023 13th International Conference on Environmental Engineering and Applications (ICEEA 2023) is going to be held on May 24-26, 2023 in Madrid, Spain. The ICEEA conference series have been held successfully in Shanghai, Dubai, Singapore, Nottingham, Chengdu, Kuala Lumpur, Rome, Amsterdam and Prague. ICEEA 2023 will provide a forum for researchers and practitioners in the field to share ideas, designs, and experiments. Participation from academia, industry and government is welcome.