Can share how do you wash your breastpump parts at work? I don't Hv the luxury of time to religiously wash my breast pump parts after each session.

Actually all these depends on individual. I used normal tap water to wash cos we are of the same - No time. However, before each use, I will use hot water to rinse it once or twice before using it. At least, it will kill the bacteria if any instantly. Of course if time permits, wash with hot water after all pumping sessions.