Ken W.F. Howard 
Urban Groundwater, Meeting the Challenge [PDF ebook] 
IAH Selected Papers on Hydrogeology 8

During the past three decades, urban groundwater has emerged as one of the worlds most pressing issues. Explosive population growth, most prevalent in cities, has placed an inordinate demand on groundwater supply, prompting concerns for its long-term sustainability at a time when the quality of available groundwater resources is being increasingly