The success of Ganga cleanup ...
Published by Manpreet Bhatti, Associate Professor at Guru Nanak Dev University
The success of Ganga cleanup program can be gauged from DO level measurement [special reference to DO sag curve] as being done to Thames river, London.
Second parameter can be bacterial bioluminescence testing [BBT, refere APHA book], a general procedure for general toxicity as highly sophisticated technques like GC-MS, LC-MS, UPLC and micro SPE are highly complicated and compound specific.
Third and most important parameter is flow proportioning [more pollution load capapcity when the flow rate is high] using GPS controlled data acquisition with SCADA.