"盛水的玻璃容器" can be translated as "a glass container for holding water" or more concisely as "a water-holding glass container" (though the first version is more commonly used).
In more specific contexts, you might also hear phrases like:
"A glass vessel for water" (where "vessel" implies a container, often used in scientific or formal contexts).
"A glass water container" (a straightforward and clear translation).