If it had already been used as a reactor coolant, or was from some other industrial processes, it could be more radioactive than you would like it to be. Other

If it had already been used as a reactor coolant, or was from some other industrial processes, it could be more radioactive than you would like it to be. Otherwise, no, unless you get enough of it to saturate your tissues and cause problems due to it being denser than your biochemistry evolved to expect water to be.