I agree with unimogbert. It's a nonhazard and you have nothing to worry about. I have toured PSUs reactor and it is a standard TRIGA research reactor, much like the one at Texas A&M and other universities. The water has such low levels of activation products that you could probably drink it without much of a dose consequence.

My advice is to use this as an excuse to drink more beer to flush your system of potential "contaminants". I recommend Otto's brewery as a good place to start.

Greg
(radiation physicist)