In 2023, self water supply to households in Germany stood at 22.1 million cubic meters. The forecasted data from 2024 to 2028 indicates a gradual decline in volume: from 21.97 million cubic meters in 2024 to 21.45 million cubic meters in 2028. This represents a cumulative average growth rate that is slightly negative over these five years, with year-on-year decreases around 0.6% to 0.7% annually. The projections suggest a consistent trend of diminishing self-reliance in household water supply.

Future trends to watch for:

Technological advancements in water recycling and conservation methods could offset declining trends.
Policy changes and incentives promoting sustainable water management could influence future supply dynamics.
Climate change impacts, such as altered precipitation patterns, may further affect water availability for self-supply.