Abstract: A paint spray booth for painting an article and separating the spent paint overspray form the air and water used in the booth to collect the spent paint material is disclosed. The booth includes a water containing pan which has a deep portion and a shallow drain portion. The water used to separate the spent paint from the air and to clean the air discharged from the booth is collected on the drain portion and sent to the deep portion of the pan in a manner to cause a flow in the drain portion and deep portion of the pan to prevent accumulation of spent paint in undesired, inaccessible locations and to encourage movement of spent paint to desired, accessible locations in the pan and/or for removal or further treatment as by settling, skimming and/or separating, or the like, to provide the present invention with low maintenance similar to or less than other such booths, such as dry filter paint spray booths.