Collecting and storing rainwater offers an innovative solution to offset potable water use for gardening, landscaping, and even toilet flushing. Rainwater harvesting systems capture runoff from roofs and direct it into storage tanks for later use, reducing the demand on municipal supplies and lowering household utility costs. This approach diminishes stormwater runoff, which helps prevent erosion, flooding, and pollution in local waterways. When properly filtered and treated, stored water can even supplement indoor needs, providing additional resilience during periods of drought.