In August, the episode "Steter Tropfen - Wasser sparen und bewahren" was broadcast on ZDF as part of the documentary series "plan b".
Among other things, it gives a short feature on the FITWAS project of the DVGW research centre TUHH, which was briefly presented by Charlotte Kast (DVGW TUHH) and Dorothea Mergel (Hamburg Wasser).

The feature is available in the ZDF media library:

Wasser sparen im Hitze-Sommer - ZDFmediathek