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Introduction
Properties
What is groundwater?
Main types of porosity
Groundwater flow
What is an aquifer?
Groundwater always on the move
Permeable
Impermeable
Porous media
Fractured aquifers
Unconfined aquifers
Piezometric surface
Aquifers and wells
Groundwater A major link in the hydrologic cycle
The hydrologic cycle
Estimated depth and residence time of world's water supply
Groundwater use
Almost nine million Canadians depend on groundwater
Percentage of Canadian population reliant on groundwater
Groundwater and the world's freshwater supply
Groundwater as a source of energy
Groundwater quality
Contamination/Pollution
How we contaminate groundwater
Groundwater contamination from a waste disposal site
Sources of contamination
Saltwater intrusion
Leaking underground storage tanks and piping
DNAPLs
Sustaining our water quality
Typical sewage treatment process in Canadian municipalities
Effect of concentrated housing on groundwater level
Septic effluent percolates to the water table
Groundwater and geology
Groundwater and engineering
Groundwater and wetlands
Conclusion
Safeguarding our groundwater supply
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