IGST exemption for government services expanded to include specified public utilities and inclusion of Indian Railways. The notification inserts a new Chapter 99 entry exempting from IGST services supplied to a Governmental Authority consisting of water supply, public health, sanitation conservancy, solid waste management and slum improvement and upgradation (Nil IGST). It also amends multiple table entries to add the Ministry of Railways (Indian Railways) alongside the Department of Posts, thereby extending the specified table provisions to the Ministry of Railways.