Waste water from factories and enterprises in IZ after preliminary treatment will be collected to centralized wastewater treatment station. Currently, the IZ is building a system of open ditches.

Different industrial wastewater has different chemical, physical and biological properties. Even this industrial waste water when mixed with other industrial wastewater can cause adverse reactions such as creating toxic gases or creating precipitates in sewage pipes ... types of wastewater. The industry is not directly concentrated together, but they are treated individually in each factory and factory that meets the Xuyen A Industrial Park Water Receiving Standard and then is directed to centralized treatment at the treatment system. of the Industrial Park.

The industrial zone has built and upgraded the concentrated waste water treatment system for phase II into two modules:

- System 1 has a capacity of 6,000 m3 / day. night.

- System 2 has a capacity of 3,600 m3 / day. night.

Xuyen A Industrial Park will thoroughly treat with a centralized treatment system, meeting the quality standard QCVN 40: 2011 / BTNMT before discharging into the receiving source.