Alternatives for treating parking lot runoff is a necessary design goal in view of the increased rates of development of recent years. The idea has become more widely accepted with the more widespread use of such systems as stormwater treatment wetlands. However, treatment systems that are both internally contained and aesthetically pleasing are fairly new. Constructing central plant islands in parking lots that also mitigate pollution from cars is an idea whose time has come. This paper outlines the practical reasons for considering such a system, some of which are cost benefits, conservation of space, and aesthetics. However, it is the philosophical statement and educational opportunity that such systems represent that may be the most compelling reason. There is a strong ecological statement made by taking the waste created in any given area, and showing the users of that space that it is being treated immediately and within the contributing space. It demonstrates a commitment not to displace problems onto the surrounding environment, and it does so in a way that is responsible and beneficial for all stakeholders.