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.
If brown water is coming from your hot water taps only, it may be rust and sediment in your water heater acting up. Water heaters usually have a lifespan of 10 to 15 years. If your water heater falls somewhere in this range, and your hot water comes out brown often, it may be time to replace it.