“pH” means the symbol for the negative logarithm of the hydrogen ion concentration, which is a measure of the degree of acidity or alkalinity of a solution. Values between 0 and 7 indicate acidity and values between 7 and 14 indicate alkalinity. The value for pure distilled water is 7, which is considered neutral.
(Added by Stats. 2006, Ch. 23, Sec. 2. Effective January 1, 2007. Operative July 1, 2007, by Sec. 3 of Ch. 23.)