I must start this column with some sad news. I learned this morning that the Canadian Ground Water Association has ceased operations. This is a sad and bad deal for drillers everywhere.
Regardless of purpose, almost all water wells must be provided with a means of protecting the borehole and provision made for the entrance of water from surrounding aquifers. This article discusses casing and screen materials in common use in the word today. It also sets forth the factors to be considered in their choice.
