Drainage pumps at pump stations are for preventing rivers from flooding. The Ministry of Land, Infrastructure, Transport and Tourism (MLIT) is drastically changing the way it orders the pumps.
There are global companies in the water business so called water majors. For a long time from the 19th to the 21st century, Veolia Environment , Suez both of France, and Thames Water of the U.K. were the three companies called water majors.