The KitchenAid Superba model KSRS25QAAL11 does not have an internal water filter. This refrigerator model is equipped with an ice maker and a water dispenser, but it relies on an external water filter if you wish to filter the water before it enters the appliance. An external water filter is usually not included with the refrigerator purchase. Instead, it can be installed separately on the water supply line that connects to the refrigerator. These filters are commonly known as inline water filters or external water filters. To filter the water and improve the taste and quality of your ice and drinking water, you can purchase and install a compatible external water filter that matches the specifications of your KitchenAid Superba KSRS25QAAL11 refrigerator. The installation process typically involves connecting the filter to the water supply line, which can be either behind or below the refrigerator. The benefit of using an external water filter is that it can remove impurities and contaminants from the water, such as chlorine, sediment, and certain minerals, providing cleaner and better-tasting water. To determine the right water filter for your specific refrigerator model, it is recommended to check the product manual or contact KitchenAid's customer support or an authorized retailer. They can provide you with the necessary information and assist you in finding a compatible and suitable external water filter for your KitchenAid Superba KSRS25QAAL11 refrigerator. Keep in mind that the availability of water filters and product specifications might change over time. Therefore, for the most up-to-date information and options, it's best to consult the manufacturer's official website or reach out to their customer support team.