Autoimmune diseases arise when the immune system attacks one or more of the body's normal constituents as if they were invaders. When the immune system fails to recognize self it may produce immune cells or antibodies (called autoantibodies) that target its own cells, tissues, and/or organs. Those attacks cause inflammation and tissue damage that lead to autoimmune disorders. There are over 80 diseases that occur as a result of autoimmune responses. The National Institutes of Health (NIH) estimates that 23.5 million Americans are affected.
RV Gray Water Tank. Since only sink and bath water collects in the RV gray water tank it needs less attention than the RV black water tank. Most people use so much water whenever the RV is hooked up for a few days, they find it convenient to leave the gray water tank valve open.
If the emergency is an earthquake or an landslide, you may have to turn off your water from outside the house to avoid contamination to the water inside your water heater and pipes. Then there is the toilet tank (not the bowl). There is about 3 to 5 gallons of clean water in each tank. You can dip it out with a cup or ladle. If you are a little squeamish about drinking water from the toilet tank, use that water for your pet or for cleanliness.