Pure water’s pH level is neutral but this can change depending on what the water is traveling through before it reaches your home. If you remember from science class, the pH scale has two different sides: acid and base with a neutral 7 separating them in the middle.
The pH scale ranges from 0 to 14. Any measurements less than 7 is considered acidic, and greater than 7 is basic (or alkaline). Also, how far away a pH level is from 7 increases quickly. Each full increment is ten times more or less than the number before it. So, a pH of 4 is ten times more acidic than a pH of 5 and 100 times more acidic than a pH of 6.


