Indeed, financing should be seen more as an "investment" and not as donations; the "Charity" approach did not deliver any sustainable service.
In Rural Water Supply, also a new & promising approach is on the rise: the BlueZone or HandPump Lease Concept, in which Districts Water Office rents out durable handpumps to communities for $ 100,- per year, including maintenance and monitoring.
This creates a win-win situation; People have affordable water 24/7 and Local Government Water Office has an additional budget, e.g. they could easily manage 200 durable handpumps, creating $ 20.000,- each year.
For further reading, see bluepump.com