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.
Step 1. Turn off the hot water heater. Step 2. If there is a thick layer of dust or dirt on your hot water heater, use a shop-vac to take off as much dust as possible. Use the crevice attachment to clean underneath the tank, around the pipes and behind the hot water heater.