A bathroom represents cleansing. It is a place where toxins (especially spiritual toxins) are removed and flushed or something is being washed off. Bathroom dreams are very common and generally relate to a work that is being done in someone's life to remove things that hinder promotion. If the bathroom scene takes place in public it typically relates to a work of humility or a work that God is doing that is going to be very visible others.
* Symbol meanings provided by www.mydreamstories.com should not be used as a dream dictionary. They are for reference only and both dreamer and interpreter should be careful to listen to the voice of Holy Spirit as to what any particular symbol means in any specific dream.