|MadSci Network: Physics|
Water cannot be magnetized in any way except very slightly by a very large magnetic field. It will be magnetized in a direction opposite to the applied field because it is Diamagnetic. [added by MadSci Admin: There are some useful previous answers in our archives which I found using our search engine to search on "water diamagnetism": Magnets and Dust Snow or Ice Magnetic? Does Water Affect Magnets? ]
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