If you're concerned about water supply, jobs and regional security, Singapore is the last place on earth you would want to settle down in.
The whole of Singapore's stability revolves around ONE MAN... the great LKY!
Unless you truly believe that he's immortal, (as he proclaims to be) it should be pretty obvious to you that things are going to start unraveling once he kicks the bucket. He's 85. How much longer do you think the status quo is going to be maintained???
Living in Singapore creates many illusions and one of them is this idea that as an ethnic Chinese, you belong to the "majority" race. However, you forget that the region actually belongs to the muslims and there are 250 million of them surrounding that little red dot which simply isn't viable over the long term.
Even is Singapore succeeds in being self sufficient in water, all Indonesia needs to do to bring Singapore to its knees is to turn off the gas while Malaysia blockades the Malacca Straits.
I think you have allowed PAP propaganda to cloud your senses. :(