Overview
- The Region Hannover put the rule into effect on June 1 and it runs through September 30, activating on any day when the DWD station at Hannover‑Langenhagen records at least 27 °C between 11:00 and 17:00.
- When the threshold is met, large‑scale irrigation of private gardens, parks, agricultural and forestry land, and sports pitches is prohibited while targeted hand watering, drip systems and stored rainwater remain allowed.
- Authorities have warned of stepped‑up controls including weekend inspections and say serious or repeated breaches can carry fines of up to €50,000.
- The region has set aside €1.6 million to help municipalities and sports clubs adapt to the restrictions and says it will prioritize information and compliance before punishment.
- Officials cite long‑term groundwater declines since about 2018 and a 2025 rainfall shortfall as the reason for the measure, and residents should expect a shift of watering to cooler hours and closer checks this summer.