In infrastructural projects,  STP & ETP gets through a lot of challenges when it comes to operating the plant effectively and smoothly without any major breakdown.

There are different physical, chemical and biological processes involved to treat the water once the raw waste comes through the plant. 

Industries can have the best sewage or effluent treatment technology installed, performance may be all star but in the absence of regular check ups and periodic maintenance, it is not possible to have the expected quality results as far as outlet water quality parameters are concerned.