You can put cold water directly into a refrigerator without any issue. There's no need to pour it into an open container first unless you want to transfer the water to a different type of container for specific reasons.
When placing cold water in the refrigerator, you have a few options:
Use the Original Container: If the cold water is already in a sealed, airtight container like a water bottle or a jug with a tight-fitting lid, you can place it directly in the refrigerator. This is a common and convenient way to store cold water.
Use an Open Container: If you have a large amount of cold water or if you prefer to use a different container, you can transfer the cold water to an open container like a pitcher or a glass. This option is useful if you want to serve the water to multiple people or if you have a container that fits better in your fridge.
Both options are safe and will keep the water cold in the refrigerator. Using an open container might allow the water to cool down a bit faster due to the larger surface area exposed to the cold air inside the fridge. However, using the original sealed container ensures that the water remains free from potential contaminants and odors present in the refrigerator.
Ultimately, the choice depends on your preference and the specific situation, but both methods are perfectly fine for storing cold water in the refrigerator.