How long can we water our gardens with drinking water? The question concerns one of the main environmental issues resulting from the expected climate change, old and undersized municipal pipelines and water that goes untreated into lakes and streams instead of filtrating down to the groundwater through the soil and thus purified. In “the Garden as a Living room”, we have worked with these issues, as volunteers, since 2008. Meanwhile, a new garden concept has been developed. The concept includes harvesting, storage and use of rainwater in horticulture to make us less dependent on municipally purified water. The concept also includes other ways to reduce water consumption and thus vulnerability.