This study was commissioned recognizing the fact that discharge of untreated sewage occurs not only because of inadequate installed capacity of sewage plants, but also due to the inadequate maintenance of existing plants.The study evaluated the performance of these plants and identified main problems, both technical and administrative. The methodology followed included:
175 STPs located in metropolitan, Class I cities and Class II towns (96 nos) were identified for their performance evaluation by:
Out of 175 identified STPs spread over 15 states, the present report has included only 84 STPs of 13 different technologies spread over 9 states of India due to a lack of response from the other STPs. Of these, the performance of 8 was good, 30 satisfactory, while the other 45 were performing poorly.
The study found that:
The report also includes a summary of the situation of each plant surveyed, and details of the measures to be taken to combat these inadequacies.
A copy of the report can be downloaded from below: