1988 – 1994
- Established the environment and public health institutions – ENPHO.
- Conducted foundational research on water quality, and public health,
- Limnology (Water Ecology), Emergency WASH.
- Worked in rural water supply, freshwater analysis, and environmental health.
- Introduction of Piyush – household water treatment
1993 First Day at Limnology Institute in Austria
Bagmati River Monitoring 1989
Dugwell Chlorination at Refugee Camp 1991
ENPHO Building 1994
Field Water Quality Testing
Limnological Investigation of Gosaikunda Lake
Limnology Course in Austria
Local Water Quality Study
Phewa Lake Study
Piyush for Water Purification
Water Quality Testing Lab DISVI 1989
1995 – 1999
- Achieved PhD degree – Mahendra Vidhya Bhushan (1999)
- Introduction of nature based wastewater, greywater and fecal sludge treatment in Nepal
Constructed Wetlands for Wastewater Treatment
First Article on Constructed Wetlands for Wastewater Treatment in Nepal
Foundation Stone on Biological Wastewater Treatment Plant at Dhulikhel Hospital 1997
King Birendra Awarding Mahendra Bidhya Bhushan
PhD Degree Award by the Prof
Presenting Cholera Outbreak in Nepal Due to the Contaminated Drinking Water
River Pollution Map Observed by Crown Prince Dipendra
Team of Fecal Sludge Treatment Plant Project at KMC
With My Prof Raimund Haberl
1999 – 2005
- Successful demonstration and promotion of household water treatment for safe water, arsenic mitigation
- Scaling constructed wetland for wastewater and grey treatment, rainwater harvesting and groundwater recharge
- Introduction of Eco Home to demonstrate complete water and wastewater management
- Third World Academy and Sciences (TWAS) Award and WB Development Market Place Award
- Leading civil society movement for pro-poor water and sanitation services
2001 ENPHO Team
Arsenic Study in Terai 2001
communitiy-awareness-on-arsenic-mitiagation
demonstration-of-ecohome
ecosan-introduction
ecosan-toilet
enpho-assembly-2000
enpho-team-1999
health-investigation-for-the-impact-due-to-the-arsenic
hoseholdwater-treatment-sodis
housedhold-level-arsenic-filter
idetified-arsenocosis-patient
international-conf2002
international-conference-on-water-and-wastewater-2002
international-houehold-water-treatment-program
kathmandu-environment-award
larage-scale-fstp-in-pokhara-2000
pou-banner-bharatpur-hospital
prime-minister-gp-koirala-twas-award
rainwater-harvesting-innaguration
shcool-education
twas-award-by-ronast-2000
volunteers-for-piyush-production-during-emergency
water-debate-2003
water-doctor
water-festival-2004-by-kmc
world-bank-dm-award-for-innovation-on-arsenic-filter
2005 – 2012
- Established UN-Habitat Project Office in Nepal
- Led Water for Asian Cities Program scaling and policy influencing in the Asian region
- Scaled community managed waste water treatment, Rain Water Harvesting and household water treatment
- Established community managed water supply systems (Siddhipur, Tokha etc)
- Advocated for urban sanitation in the region (Nepal, Bangladesh, and Pakistan)
- Settlement Improvement Advisor – Bangladesh – improvement of basic infrastructure in slum communities
advocacy-for-urban-sanitation
celebrating-international-year-of-sanitaion-2008
community-engagement-in-bangladesh
meeting-with-youth-volunteer-to-combat-cholera
mobile-public-toilet-introduction
my-team-in-bangladesh
national-convention-on-water-conservation
rainwater-harvesting-mass-campaign
safewater-in-community-bangladesh
siddhipur-driking-water-project-completion
water-conservation-movement
water-conservation
water-scarcity-in-pakistan
2012 – 2025
- Deputy Director & Lead, Asia Region – WSH, Bill & Melinda Gates Foundation
- Led CWIS and transformative sanitation strategy across Asia.
- Architect to establish Sanitation Trust Fund at ADB
- Strengthen partnerships with multilateral/bilateral agencies and development banks.
- Supported governments of India, Bangladesh, and Nepal to scale non-sewered sanitation.
- Guided investment planning, portfolios, and Asia program strategy.
- Architect for establishment of several global and regional platforms
- Global Sanitation Graduate School (GSGS)
- Global Water & Sanitation Center (GWSC),
- Regional Capacity Building Platform at ITN-BUET Bangladesh
- Sanitation Capacity Building Platform, NIUA, India,
- Global Sanitation Center for Excellence, IIT Palakkad, India.
- Received Bill Gates Sr Award 2023 and Global Sanitation Leader Award 2025
adb-toyo
bangladesh-event
bill-sr-award-announcement-by-bill-gates-and-melinda-gates
bill-with-shit
design-faecal-sludge-management
economic-burden
GATES_WSH_SanitationValueChain_graphic_rev
global-sanitation-graduate-school
gsgs-iwa
in-dialogue-with-mimi-gates-may-21-2024
jackshim-at-office2
my-team-at-the-gates-foundation
my-team-in-india-office
rte
speaking-at-sacosan-nepal
tt
with-colleagues-after-aem-event
2026 – Present
- Member of the Board of Trustees and Senior Strategic Partnership, Resource Mobilization Advisor to the President,
- Asian Institute of Technology (AIT), Bangkok
- Chairman of the Board of the World Toilet Organization (WTO), Singapore
- Co-founder and a member of the Governing Board, Global Sanitation Graduate School Governing Board (GSGS)
- Chairman of the Advisory Board, Global Water & Sanitation Center (GWSC) – AIT
