Itisgenerallybelievedthatthereisagoodsupplyoffreshwater。Buttoourdisappointment，thefactisjusttheopposite。Aswecansee，theworldpopulationisgrowingrapidlydaybyday。Soenoughfreshwaterisneededtofeedsuchabigpopulation。What'smore，withthedevelopmentofindustry，factoriesandvehiclesproducepoisonousgasesorwastes，whichconsequentlyresultsinthepollutionofwater。Thoughfresh，agoodamountofitcannolongerbeused。Onlyquitelimitedfreshwaterresourceisavailabletohumanbeings。Soit'shightimeforushumanbeingstotakequickactiontoprotectwaterresource。Stoppollutionandsavewater，otherwise，wecannotsurviveontheearth。Withfreshwater，theworldwillbeprosperous。(130words)