what is groundwater composition
Water is constantly in contact with the ground in which it stagnates or circulates, so equilibrium develops between the composition of the soil and that of the water: i.e. water that circulates in a sandy or granitic substratum is acidic and has a few minerals.he rate of groundwater flow is controlled by two properties of the rock: porosity and permeability. Porosity is the percentage of the volume of the rock that is open space (pore space). This determines the amount of water that a rock can contain.