The parameter pH (the negative base-10 logarithm of hydrogen ion activity, measured in moles per liter) indicates whether a substance will behave as an acid or base. It is one of the most important parameters that describe groundwater quality, because pH largely controls the amount and chemical form of many organic and inorganic solutes in groundwater.
Information Circular 6
Digital Object Identifier (DOI)
Fisher, R. Stephen, "Groundwater Quality in Kentucky: pH" (2002). Kentucky Geological Survey Information Circular. 2.