Water is the most important resource for the people in the world. We cannot survive without the water, and many other industries rely a lot on the water; At the same time it is a must-be to monitor water level, pressure and flow during production and especially water level in river, reservoir, sea, underground water and surface water to prevent the disaster and harm.

The water industry provides drinking water and wastewater services (including sewage treatment) to residential, commercial, and industrial sectors of the economy.

The water industry includes water engineering, operations, water and wastewater plant construction, equipment supply and specialist water treatment chemicals, among others.

The instrumentation of water level, water pressure, water temperature, water flow and water analysis is an essential part for the monitoring and control of water and wastewater industry.