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The concept of common effluent treatment plant has been accepted as a solution for collecting, conveying, treating, and disposing of the effluents from the industrial estates. The effluent includes industrial wastewaters and domestic sewage generated from the estate.

A CETP can be changed to combined effluent treatment plant when it collects sewage from surrounding localities and treat it with industrial wastewaters.


CETP is designed on the basis of:

  • Quality and flow rate of the wastewater.

  • Effluent standard required by CETP.

  • Possibility of recycle and reuse of treated wastewater.

  • Availability of land, manpower, energy and expertise in specific treatment methods.

  • Willingness of the industries located in the industrial estate to contribute towards the capital and operating expenses of CETP.

Advantages of providing CETP

  • Small and medium scale industries are not required to treat their wastewater separately.

  • Assured wastewater treatment hence better control over pollution.

  • Concerned pollution control agency has to monitor only one treatment plant for its performance.

  • Participating industries have commitment to generate wastewaters acceptable to CETP.

  • Industries are responsible for finding ways to minimize pollution load and reduce water consumption to the extent possible.

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