Rainwater harvesting systems are methods used to collect and store rainwater for various uses. These systems typically involve capturing rainwater from rooftops or other surfaces, directing it through gutters and downspouts into storage tanks or cisterns. This collected water can be used for irrigation, flushing toilets, or even drinking, depending on the treatment process. Implementing rainwater harvesting can help reduce reliance on municipal water supplies and lower water bills. It also promotes sustainable water management by conserving groundwater and reducing stormwater runoff, which can lead to flooding and water pollution.