Which tank in an RV holds water for cooking, drinking, and showering?

The tank in an RV that holds water for cooking, drinking, and showering is the potable water tank. This tank is specifically designed to store water that is safe for human consumption and use, adhering to health and safety standards. Potable water is typically treated to eliminate pathogens and impurities, making it suitable for drinking, cooking, and bathing.

Other tanks mentioned serve different purposes. The grey water tank collects wastewater from sinks and showers, while the black water tank is designated for sewage and toilet waste. The term "clear water" is not commonly used in RV terminology and may cause confusion regarding its intended use. Therefore, the potable water tank is the correct choice for water intended for cooking, drinking, and showering.