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Featured Projects

Across global institutions and local platforms, these projects reflect Dr Roshan Raj Shrestha’s hands-on role in building sanitation, water, and urban systems that operate at real scale.

Projects at Bill & Melinda Gates Foundation
(2012–Present)

Scaling Citywide Inclusive Sanitation (CWIS) in Asia
After being named the recipient of the Bill Gates Sr. Award, the associated charitable fund was dedicated entirely to high-impact community work in Nepal. This funding directly supported essential educational programs, flood relief efforts, and the development of local community spaces.
Global CWIS Partnerships
Established and nurtured partnerships with global stakeholders, development banks, and regional institutions to create enabling policies and financial structures for inclusive sanitation worldwide.
Urban Sanitation Market Development
Spearheaded initiatives to develop and formalize the urban sanitation market, fostering profitable and sustainable business models for service provision, including waste reuse.
Swachh Bharat Mission (SBM) Technical Assistance
Provided expert technical and strategic guidance to the Government of India, particularly enabling the scaling of Fecal Sludge Management (FSM) under the SBM.
Bangladesh FSM Demonstrations
Led demonstration projects showcasing innovative and sustainable models for Fecal Sludge Management (FSM) in various urban centers across Bangladesh.
ADB Sanitation Trust Fund Operations
Key involvement in the operationalization and strategic deployment of the Sanitation Trust Fund established at the Asian Development Bank (ADB).
FSM Business Model Pilots
Designed and managed pilot projects to test and validate various commercial models for FSM services, focusing on financial viability and private sector participation.
Results-Based Measurement Systems
Developed and implemented rigorous results-based measurement systems to track and evaluate the impact of the Foundation’s WSH investments and programs.
Tech-to-Field Transfer Mechanisms
Created mechanisms and partnerships to efficiently transfer and scale up innovative sanitation technologies from the research stage to large-scale, sustainable field deployment.
Global Stakeholder Engagement
Actively engaged with governments, NGOs, private sector, and academia globally to align efforts, advocate for CWIS, and build sector capacity.

Projects at UN-Habitat
(2004–2012)

Water for Asian Cities Program
Managed the development and implementation of this crucial regional program focused on improving water supply and sanitation in urban areas across South Asia.
Urban Water and Sanitation Improvements
Provided technical oversight and guidance for infrastructure projects aimed at improving water supply and sanitation facilities in urban centers and secondary towns.
Policy and Guideline Development
Supported governments in the formulation of new policies and guidelines related to urban water, sanitation, and environmental management.
Urban Poverty Reduction
Focused on the settlement improvement component of the Urban Partnerships Poverty Reduction Program, aiming to uplift the living conditions of the urban poor.
Slum Upgrading & Community Contracting
Supported projects for slum upgrading, including housing and tenure improvements, with a focus on utilizing community contracting mechanisms.
Sanitation, Drainage, Housing, and Tenure Improvements
Provided technical support for various infrastructure and service projects specifically targeting improvements in sanitation, drainage, housing quality, and land tenure security in informal settlements.

Projects at Environment and Public Health Organization (ENPHO)
(1990–2005)

Kanchan Arsenic Filter (KAF)
Co-developed and promoted the Kanchan Arsenic Filter, a household-level technology for effective removal of both arsenic and microbial contamination from drinking water.
PIYUSH Chlorination
Developed, produced, and socially marketed PIYUSH, a low-cost, point-of-use chlorine solution for household drinking water purification.
Constructed Wetlands & DEWATS
Pioneered the application of Constructed Wetlands and Decentralized Wastewater Treatment Systems (DEWATS) for treating hospital and municipal wastewater.
Eco-Home Concept
Conceptualized and built the Eco-Home, demonstrating the integration of rainwater harvesting, greywater recycling, and ecological sanitation (e.g., composting toilets) at a household level.
Water Quality Research & Citizen Monitoring
Established ENPHO’s Environmental Research Laboratory and initiated citizen-led monitoring programs to assess, track, and advocate for improvements in urban water quality.