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.
Preserve Plumbing: If your hot water heater thermostat is set to 120 degrees, it will slow down mineral buildup and corrosion in your water heater and pipes, extending the life of both. Safety: Setting your hot water heater thermostat to 120 degrees can prevent scalding.