The 2030 Agenda for Sustainable Development was adopted by the UN in 2015 and is to be implemented globally by 2030 – also by Switzerland. In this newsletter, we illustrate how Eawag’s research contributes to achieving these objectives. We are starting on our own doorstep, but are also helping to achieve objectives more quickly and easily elsewhere. All contributions are based on the presentations given by Eawag researchers and external experts at the Eawag Info Day 2023 on 14 September.