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Get to know the dedicated professionals behind our success -
Leah Isack Marwa
Biography
Experienced Civil and Water Resources Engineer with over ten (10) years of expertise in water resources, management and sanitation. Currently serving as a Water Quality Laboratory Engineer, specializing in overseeing water quality assessments to ensure regulatory compliance and public health standards. Extroverted researcher and consultant with a passion for innovation dedicated to contributing to a research team's success.
Research Interest
Research Assistant, Pathogen Risks and Optimized Management of Sanitation Investments in Sub-Saharan Environments (PROMISE) Project
March 2025 – Present
Focused on piloting of SaniPath and COMPASS tools in Tanga Region
Research Assistant, Higher Education Partnership in Sub-Saharan Africa; Majicom Kiosk Project
Sept 2024 – Present
Focused on water quality testing, report writing and paper development
Research Assistant, Development of Sustainability Strategy and Technical Backstopping Mechanism for RUWASA
Nov, 2024 –May, 2025
Focused on questionnaire development, data collection, analysis, and report writing
Research Assistant, Challenges of Financial Insecurity in Arusha Deport Manual Emptier Group Sept 2023 – May, 2025
Developing data collection tools, conducting data analysis, and writing reports.
Researcher, Guiding Tool for Water Pump Problems
Feb 2020 – Oct 2021
Focused on questionnaire development, data collection, and analysis, and report, publication, funded by Global Water Partnership.
Research Assistant, WASH Projects Clustering
Nov 2020 – Feb 2021
Assisted in questionnaire development and data analysis for community-based water supply organizations, funded by DT Global, INC.
Research Assistant, Rainwater Harvesting Technology for increased water self-sufficiency in Tanzania.
Sept 2019 – Present
Monitoring and evaluating rainwater harvesting projects for public health institutions in Tanzania.
Researcher, Faecal Sludge Characterization and Quantification
Oct 2016 – July 2017
Conducted data and sample collection, lab analysis and report for a community-scale study, funded by Eawag and BORDA
Contacts
Email:
Projects
Training of Water Quality Experts – Mwanga-Korogwe Water Treatment Plant
April, 2025
Facilitated lectures on water quality analysis and chemical dosing.
Design Review, Institute of Marine Sciences (Jan 2023 – Dec 2023)
Conducting design reviews, field data collection, plumbing service design, and producing site drawings.
Water and Sanitation Engineer, Feasibility Study, Ngwenya Water Supply (Oct 2022)
Performing data collection and analysis, water quality assessments, demand evaluations, and preliminary system design.
Water and Sanitation Engineer, Nachingwea School of Nursing (Oct 2021 – 2023)
Overseeing design reviews, attending site inspections, and supervising construction.
Project Assistant, Constructed Wetland Technology Book Project (Oct 2021 – Present)
Contributing to chapter development, project supervision, field data collection, and proofreading.
Publications
Marwa, L. I., Munishi, S., & Mwamila, T. B. (2022). Dar es Salaam, Know-what, know-when and know-how: A web and mobile-based android application for early detection of pump failures in rural water supply projects, Tanzania. Water Practice and Technology, 17(11), 2447–2462. https://doi.org/10.2166/wpt.2022.136