1. PWD public Health Branch, Haryana
2. PWD public Health, Bravely, Punjab
3. Irrigation & Public Health, Himachal Pradesh
4. Chandigarh Administration, Chandigarh
5. Municipal Corporation, Chandigarh
6. Punjab Urban Planning & Development Authority (PUDA)
7. Haryana Urban Planning & Development Authority (HUDA)
8. Patna Water Board, Patna, Bihar
9. New Okhla Industrial Development Authority (NOIDA)
10. Military Engineering Services (M.E.S)
11. Punjab State Tube well Corporation, Chandigarh
12. Soil Conservation Department, Himachal Pradesh
13. Punjab Small Industries & Export Corporation, Chandigarh
14. Central Ground Water Board "Govt. of India"
15. Haryana State Minor Irrigation & Tube well Corporation
16. Department of Agriculture, Haryana
17. Big Industrial House of the state of Himachal Pradesh, Uttar Pradesh, Haryana, Punjab etc.
18. Irrigation Department of Uttar Pradesh
19. Irrigation Department of Uttaranchal
20. WAPCOS Ltd.
21. PSTC Ltd.
22. PWD Kolkata
23. RFL Ltd.