The water treatment developed process for services is subject to its source. It can be water from the surface or from a well, depending on the area where the plant is located. Once the source is established, the Water unit designs the best alternative to pre-treat water: for example, water treatment for a biomass boiler may receive a first treatment with multimedia filters, a second treatment by reverse osmosis ending in an electrodeionization system. In this process, in order to avoid buildup on the turbine blades, silica monitoring systems are implemented.

The water treatment systems for services depend on their complexity, continuous production and criticality. These treatments may be implemented for steam generation or cooling systems depending on the purity required. Treatment costs vary according to the expected purity.