Lightning talks presented by researchers from around the country that highlights the challenges they experienced with stakeholder engagement in FEWS projects and lessons learned from engagement. This particular presentation discusses engagement with with local pump technicians, originations, and government in Tamatave, Madagascar to develop a sustainable solution to protect the health of engineers, social scientists, and community organizations through a social marketing campaign targeting pitcher pump technicians who manufacture, install, and repair the pumps. The presentation addresses the balance between scientific rigor vs. applicability at the field level and the concept of social desirability bias. Lessons learned are also discussed such as stakeholder and community engagement takes time and introduces new complexities but it well worth the effort. NSF Award No. 1856059.