Plating can be used in a variety of environmental control systems related to waste water treatment, including DI systems and water recycling systems.

Epson's cyanide treatment line is used to treat all cyanide, gold and alkaline waste from production, and can treat approximately 222m3 of waste daily. Epson also has a heavy metal treatment line to treat all metallic and acidic production waste, and can treat approximately 278m3 of waste daily. These systems allow users to maintain trade effluent treatment facilities in good order and allow for quality trade effluent that exceeds PUB's regulatory and environmental requirements. Epson is working to improve the current chemical coagulation to electro-coagulation method for waste water treatment in order to minimise chemical usage and waste.

Another system that Epson has developed is the DI system, which has been used as the feed source for water generation. The system is able to generate three different types of DI water (RO, LP and HP) to meet production needs using Ultra Filtration and an RO system. The DI system can produce approximately 528m3 with less than 20us of quality water daily to ensure an uninterrupted quantity and quality of DI water supply. -> µS (micro Siemens)

Epson's in-house water recycling system has proved to be a cost-effective and efficient way to reduce our water consumption. The system minimises chemical usage and the strain on natural resources, conforming to Seiko Epson's environmental policies and focus on water conservation. The result has been an approximately 40% recycling rate for production waste water. In addition, we also have a rainwater collection project in place. Epson is currently working to achieve zero trade effluent discharge by recycling all effluent.

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