I am not very much into saving water but I am pro collection and un-wasteful usage, I am currently doing my house and I am following this guy's water and power harvesting collection and storage
I am a huge believer in that rain water and the sun can help out most to supplement the piped water and kenya power and lower bills.
Plus with the talk by the government about water rationing they expect it to continue upto 2025 for Nairobi and Mombasa and even then the population will have outgrown the new dams and collection tunnels being done
To Each His Own