Take what precautions you can about keeping your water clean but purify or boil everything befor you drink it. Water doesn't need to be boiled just get it to 160deg for about 15 minutes. As for collecting water our great grand parents would laugh at us. To hold water and liquids it took people with special skills and many hours to make barrels. All we have to do is put a garbage bage in just about any container to make it water tight. That is if we don't have enough containers anyway. For hygiene chlorine bleach would be worth it weight in gold. Also if you dig a trench or make an outhouse you are supposed to use lime (calcium hydroxide)to sanitize it (raises the ph to high for bacteria).