The present invention supports a reservoir system and method that allows a household or user to collect, retain and reuse unused clean water (i.e. clean water left in buckets, glasses, cups, etc.) instead of dumping it down a drain. Rain water may also be collected, retained and used. The reservoir system includes a reservoir tank for storing the water, dump bucket to receive the water, a piping and water releasing mechanism to release the water being stored and a mobility mechanism to allow for transportability of the system. The reservoir system is designed to help combat the current green initiative to save water for more practical uses.