Hi Megan, I recommend ...
Published by Amy Forsgren
Hi Megan,
I recommend studying the website for the Bill and Melinda Gates Foundation (https://www.gatesfoundation.org/What-We-Do/Global-Growth-and-Opportunity/Water-Sanitation-and-Hygiene).
They have a mix of technology and social concerns that I believe you will like.
Read the case studies and ongoing projects; if one of them makes you say, "Wow, I want to know more" then that's a start.
Best of luck,
Amy Forsgren