A difficult, but yet quite successful year for the WaterFoundation is coming to an end. In our Annual Letter 2021/22, we inform as usual about our completed projects, e.g. in Ethiopia, the progress of ongoing undertakings such as the CloudFisher project in Bolivia and planned projects, for example in Peru. We also report on our networking and communication activities. For those who are not yet on our mailing list and receive it automatically, we make it available online. Enjoy reading!