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The Plant Operations Smartphone Tracker (POST) team is charged with building a mobile application which tracks water quality data from AguaClara's eleven rural treatment plants in Honduras. This tool, implemented as an Android phone application, will be built from start to minimal viable product (MVP) during the spring semester and implemented in Honduras in early summer. Team challenges include building a robust data-capture system that works seamlessly with intermittent internet connections, designing an intuitive interface that displays plant performance data to operators, connecting the app to a custom-built Bluetooth turbidimeter, and providing detailed recommendations for future improvements.