Groundwater is a safer water source than surface water because it is protected by soil or rock, and is not so easily contaminated. A properly constructed water well ensures that the water you drink is safe and clean. The components that make up a properly constructed water well include the following, and can be reviewed on the Ministry of Environment Groundwater Regulations.
This will protect the ground water aquifer from surface water contamination.
The drive shoe is welded onto the first piece of casing and helps advance the casing into the ground.
The steel casing is used to case off overburden formation such as sand, gravel, small boulders, etc. We usually use 6” casing for domestic wells.
This is done without steel casing and is often called open-hole drilling.
A 4” PVC liner is used as a pump protector in bedrock holes. It protects your pump from rocks falling off the wall of the well, which could damage the pump or leave the pump stuck in the well.
A standard screen assembly includes all the materials you need to effectively screen out unwanted materials and is used in overburden wells if required.