**Summary** This OSF archive includes materials for the analysis of the environmental outcomes of the WASH Benefits Bangladesh trial (NCT01590095). The principal investigator for the trial is Stephen Luby at Stanford University, and the coordinating principal investigator for the overall WASH Benefits study is Jack Colford at UC Berkeley. This archive includes the trial's pre-specified analysis plan for the environmental outcomes. The archive will make public additional study materials, including full replication files for the environmental analysis (clean datasets with metadata, final analysis scripts), at the time that these outcomes are published in a peer-reviewed journal. Additional Information The trial was funded by the Bill & Melinda Gates Foundation through a grant to the University of California, Berkeley (OPPGD759). If you have questions about files in this archive, please contact Ayse Ercumen (aercumen@berkeley.edu) or Andrew Mertens (amertens@berkeley.edu).