Around 50 lakh passengers use the Northern Railways and drink water from the stations. It is highly likely they putting their health at risk.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/indian-railways-watergate-report-finds-water-stations-highly-contaminated
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/ndtv
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-supply
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/drinking-water
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-quality
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health-effects
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/waterborne-diseases
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/delhi