This story hit home. Smack right in the center of my gut.
Currently I am a Water & Sanitation Peace Corps Volunteer in Lamud - a small community of Northern Peru. Water issues are what I am faced with everyday - both in my personal and professional life. Living and emerging myself in the community has proved that, like Susana pointed out, its not simply about infrastructure. On the contrary, it's much LESS about infrastructure than it is about behavioral change. Infrastructure will only provide a technical solution relatively simple to achieve. But in order for the infrastructure to serve its purpose in the long term we need adaptive change. Yes, people need water delivered to their homes but this water needs to be treated, the systems need to be maintained and operated and it needs to be managed appropriately. All which requires social change. So while our $5 will be valuable to build a water system we are also going to need hands-on in site training and education for those who will be undergoing the change of fetching water, which in many cases is also a significant social activity, to receiving water at their household, which in many cases becomes re-contaminated due to lack of educational information.
We all have good intentions.