1. It is not the donor's fault if the wells are not being maintained properly. Ideally this should be something that the locals are paid and trained to do but honestly, if you can't even be bothered to take care of your primary source of water, you have big problems which cannot be solved by ANYONE's philanthropy.
2. That brings me to the point about local attitudes towards donors and what is done for them: I have seen locals really benefit from things donated to them and they then use the new facilities to build a much better future for themselves and their children. HOWEVER, I have also seen locals who absolutely waste whatever is given to them. They may even loot everything down to the last nut and bolt. I have some theories about why this happens (based on personal experience) but I have noticed very different outcomes in different villages for the EXACT SAME help received from donors.