How do I repair a toilet?

A flush toilet or water closet (WC) is a toilet that disposes of the waste products by using water to send them through a drainpipe to another location. Modern toilets incorporate an 'S' bend which remains filled with water between flushing, thus providing a hygienic barrier by preventing foul gases from passing up the drainpipe. During flushing the 'S' bend provides siphon action which helps accelerate the flushing process. However, since this type of toilet does not generally handle waste on site, separate waste treatment systems must be built.