For 20 million shillings, my WES department can dot state of the art toilets all over Nyandarua. For 100 million I can provide 50% of the citizens with a good toilet. I would however, recommend that the cash be used to set up a sewage system and let citizens connect to it for free. It may not cover the entire county but would be a good start to be completed in phases.
The first priority must be water.