1. a United Nations Children's Fund , 291/2 A.J.C. Bose Rd, Kolkata , 700017 , India
2. b Formerly United Nations Children's Fund , 291/2 A.J.C. Bose Rd, Kolkata , 700017 , India
3. c Public Health Engineering Directorate , N.S. Building, 6th Floor, 1 Kiran Sankar Roy Rd, Kolkata , 700001 , India
4. d United Nations Children's Fund , Bal Bhawan Bdg., Ujan Bazar, Guwahati , 781005 , Assam , India
5. e Public Health Engineering Department Assam , Hengrabari, Guwahati , 7810036 , Assam , India
6. f United Nations Children's Fund , 8 Patliputra Colony, Patna , 800013 , Bihar , India
7. g Public Health Engineering Department , Viweshvaraya Bhawan, Patna , 800015 , Bihar , India
8. h AN College , Boring Road, Patna , Bihar , India
9. i United Nations Children's Fund , 1/4 Vipul Khand, Gomti Nagar, Lucknow , 226010 , Uttar Pradesh , India
10. j UP Jal Nigam , 6 Rana Pratap Marg, Lucknow , 226018 , Uttar Pradesh , India
11. k United Nations Children's Fund , RCH Office Complex, Namkum, Ranchi , 834010 , Jharkhand , India
12. l Drinking Water and Sanitation Department , Nepal House, Doranda, Ranchi , 834002 , Jharkhand , India
13. m National Metallurgical Laboratory , Jamshedpur , Jharkhand , India
14. n United Nations Children's Fund , 73 Lodi Estate, New Delhi , 110003 , India