Rainwater HOG is made of food grade plastic resin which means that if you fill the HOG with potable water, you can drink the water from the HOG. Because the roof of your house can be made of various materials and is often covered with plant or bird debris, rainwater is often considered nonpotable. Rainwater collect in a Rainwater HOG can be used for irrigation i.e. with your existing drip system for watering plants or for hosing the car. If the rainwater is treated with a first flush diverter and appropriate filtration, the water in the HOG can be used as an emergency backup water supply. HOGs can also be plumbed back into the house for toilet flush and washing machines. In fact, rainwater is softer than most town water so is better for your clothes and does not cause scale buildup in toilets and other appliances.