wc (watercloset under water)
1Flush toilet — A flush toilet or Water Closet (WC) is a toilet that disposes of human waste by using water to flush it through a drainpipe to another location. Flushing mechanisms are found more often on western toilets (used in the sitting position), but many… …
2Toilet — This article is about a sanitation fixture used primarily for the disposal of human excrement. For a room containing a toilet, see toilet (room). For other uses, see toilet (disambiguation) …
3Rainwater harvesting — is the gathering, or accumulating and storing, of rainwater. [ [http://www.harvesth2o.com/faq.shtml Definition of rainwater harvesting] ] Traditionally, rainwater harvesting has been practiced in arid and semi arid areas, and has provided… …
