A lot of people ask us first thing when we get into their house if we need to hook up our truck to a source of water. The answer to this depends on not only the season, but also how busy we are.
Our truck has a fresh water holding tank of 100 gallons. The reason i say that it varies during the season is because in the summer we will fill up the tank, and depending on how many jobs we have we may blow through it by lunch time. This would be a time where we would have to hook up.
During the winter is usually a different game. We realize that if you have your outside water tap on all winter you may have not only you pipes freezing, but the spout itself may be frozen. We try to make sure we leave our house with enough water to do any job in the winter. With that being said if you have a a huge job that will take more than our 100 gallon tank to clean then you may need to show us an alternate tap, or turn your outside tap on for us to use for a short period of time.