The Central Pollution Control Board (CPCB) has also identified these three river stretches among the 15 most-polluted river stretches in the country.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/three-river-stretches-gujarat-among-most-polluted-ngt-chief
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/indian-express-ahmedabad
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/gujarat
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/river-pollution
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/central-pollution-control-board-cpcb
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/national-green-trbunal-ngt
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/biological-oxygen-demand-bod
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-pollution