One piece of advice is to ...
Published by Sanjay Deshpande
One piece of advice is to check the new NGT STP plant output standards for all urban areas. The standards for putting into a water body have been significantly tightened.
Depending where you are (urban/rural) and what the existing treatment process is achieving will start you on the way. There are lots of options including low O&M solutions out there. We use them in villages regularly.