I have read the 10 commandments and i think they are great but slightly over the top in certain areas. No i would not drink the water my chickens drink but then neither do i eat worms, beetles, slugs, snails, flowers or dig through soil to dust myself off. I agree, no green water for them and if i see poop in the waterer i empty it!
Whatever happens to wild chickens? they drink whatever they find when they are thirsty, chickens are very tough, much tougher than i think most of us give them credit for. I wouldn't drink from a puddle but i reguarly this winter have witnessed my chickens drinking from my water logged grass!
As for the metal feeder getting tipped over, i drilled 2 holes in the bottom and attached it to a 1x2 ft piece of wood, then i got fed up of them kicking anything and everything into it and pooping in it i made my own feeder out of a 5 gl bucket and some old 4 inch piping i had. I am now going to steal the idea of the guttering that i saw above, that is a brilliant idea!