Where can the waste created by this technological age be disposed of? The by-products of our relentless advancement are often more detrimental than beneficial. The necessity for this 'waste disposal' has given birth to a number of ruthlessly unscrupulous operatives. Open Tap traces the route taken by one such operative and the system he uses to dump the toxic concoctions he has collected. A puppy, lost and finally abandoned, is exposed over a period of time to this malevolent concoction.