The Yamuna's condition may improve soon, but only slightly.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/haryana-keep-yamuna-flow-steady
[2] http://admin.indiaenvironmentportal.org.in/category/author/jayashree-nandi
[3] http://admin.indiaenvironmentportal.org.in/category/newspaper/times-india-new-delhi
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/haryana
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/yamuna
[6] http://admin.indiaenvironmentportal.org.in/thesaurus/national-green-tribunal-ngt
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/delhi-pollution-control-committee-dpcc
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-resources