Javor, P., N.R. Thomson, B. Wotton, 2009. GeoHalifax, Proceeding from the 62nd Canadian Geotechnical Conference and the 10th Joint CGS/IAH-CNC Groundwater Conference, Halifax, NS, Sept. 20-23.

Large diameter residential drinking water wells are at a higher risk of contamination from surface water impacts than drilled wells.  The possibility of a higher incidence of contamination of large diameter wells is attributed to site selection and construction problems. The objective of this investigation is to assess several design changes that are thought to improve the structural integrity of large diameter wells and to determine whether one design is more prone to contamination than the others.  This paper describes the construction of the large diameter wells and results from ongoing laboratory and field trials.