A well is supplied with water from an underground water source known as groundwater. Groundwater is stored below the surface of the earth in aquifers, often between sediments and in bedrock fractures. It accumulates from surface water and precipitation – including rain and snow melt – infiltrating the earth and filling underground cracks, pores, and crevices.
There are good sources of information on groundwater in your area, such as water well records on file with the Department of Environment and Climate Change, Water Resources Management Division.
The Groundwater Section has a number of products and services available via the web and through government offices: