The quality restoration of any river, especially of the Yamuna at Mathura, a religious center in India, is a very complex and interdisciplinary endeavor. River pollution cannot be minimized merely by diverting the routes of drains carrying wastewaters and/or establishing sewage treatment plants.
Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/revival-mathuras-ailing-yamuna-river
[2] http://admin.indiaenvironmentportal.org.in/category/author/devendra-s-bhargava
[3] http://admin.indiaenvironmentportal.org.in/category/journal/environmentalist
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-pollution
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/river-pollution
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/yamuna
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/india
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/mathura-d
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environmentalist
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/devendra-s-bhargava