Daily Check requirement on Big Airways craft.
Others I have seen require water drains done if the aircraft is scheduled on ground for anywhere between 3 and 6 hrs. Depends on operator. Some only require it to be done when the aircraft is remaining over night at a domestic airport.
During winter ops some types require special procedures such as a long stay in a warm hangar to ensure the ice in tanks melts before sumping is carried out.
Hope this helps.
