According to different analysis a human body can survive 8-14 days without water depending on the person and how fast sweat, urine, and tears are leaving the body and up to 7-8 weeks without food depending on conditions like weight, temperature and exertion.
A 97 year old woman survived 8 days without drinking or eating anything under the rubble of her home after earthquake occurred in Iran in January 2004.
In many part of the world water fight is played which is also very bad as clean water in many countries of the world are not available and playing water fights with clean water is regrettable.