Could you break up the fundraising with your involvement with sick children? I cannot just assume a 50-50 split. More details on how you worked with previously sick children is appreciated, especially if it was in a clinical setting.
Installing water filters... was this while you were on study abroad in Spain? Was the purpose of the trip on humanitarian needs or was it studying courses?
What did you do as a summer camp counselor?
The lack of details gives me difficulty identifying your purpose as a physician and a compelling reason to invite you to interview.