Indian Railway Catering and Tourism Corporation (IRCTC) Swajal Vending machines are available at Hisar/HSR railway station . Chilled RO water is available at starting price of Rs 1. These are available at Platform no :- 1 , 3 , 4
Rate chart as mentioned in photo below :-
Source :- Self Pic

RailWire WiFi is available in Hisar station
Source: click here

2 ATVM is installed towards Jaat colege Entry Gate and 1 ATVM is installed at the main gate entry of station

If you're going towards Jaat College, Azad Nagar, Sector-1,4,9,11,13,15,16,17 , Urban State, Vidyut Nagar, Mini Secretariat , HAU & Central Jail take exit towards the side of Platform No. 6 (Left side when Comming from Bhiwani , Sadulpur & Jakhal)
If you're going towards Red Square Mrkt, Parijaat Chawk, Nagori Gate, Auto market, Padav Chawk, Mill Gate, Secotr 14, GJU & Bus Stand take exit towards plateform no 1 (right side when Comming from Bhiwani, Sadulpur, Jakhal)

Water Vending Machine available on Platform 1 and 3
important trains like 19027/19028 Vivek express, 19415/19416
ADI - SVDK EXPRESS and other important trains arrive on this platform
Water is avaliable at nominal rate prescribed by Irctc.