The first inequality means that the distance between x and c is greater than 0 and that x â  c, while the second indicates that x is within distance Î´ of c. Note that the above definition of a limit is true even if f(c) â  L. Indeed, the function f need not even be defined at c.
Once inside a hot water heater, however, Legionella bacteria multiplies and is conveyed through the household plumbing, where it may be inhaled in the aerosol mist that accompanies showering, bathing or even washing dishes in a sink. Very young children and elderly people are particularly at risk.
Flush and Refill a Hot Water Heater. Turn off the gas valve or shut off the electricity breaker that powers the hot water heater. Connect a hose to the drainage valve located at the bottom of the hot water heater. Run the hose into a drain or outside; the water from the hot water heater will drain through it. Close the cold water valve.