Overview

• Bund für Umwelt und Naturschutz (BUND) data show nearly half of German districts face critical groundwater stress, highlighting the need for targeted conservation efforts.
• Berlin’s green-space office advises that only trees under ten years old should receive regular potable-water watering while mature street trees rely on deeper groundwater.
• Naturschutzbund (Nabu) Niedersachsen recommends providing shallow bowls or bird baths for wildlife and disinfecting them with boiling water between refills to prevent germ growth.
• Households are encouraged to cut domestic water use through measures such as installing water-saving showerheads, using the small toilet flush and avoiding unnecessary tap flow.
• Environmental groups advocate for more green roofs, vegetated facades and plantings of native drought-tolerant species to enhance cooling, CO₂ storage and urban habitats.