There are several reasons why a water main might break. Most of these reasons involve either the material of the pipe itself or drastic changes in the environment surrounding the pipe. Human errors may be a factor as well. Here are some of the most common reasons why water mains break:
Pipe Corrosion – Depending on the material of the pipe in question, corrosion is a possible reason for a water main break. The Village of Orland Park requires the use of materials that are less susceptible to corrosion, such as copper and ductile iron.
Soil Erosion – Factors such as nearby construction and past water issues can cause the soil surrounding the water main to erode, destabilizing the area around the water main and making it more likely to shift and break.
Temperature Changes – Freezing temperatures can make the ground contract from the cold, putting more pressure on the outside of the water main. Conversely, excessively hot temperatures can cause the ground to shift, which can shear the water main.
Accidents – Human error can also cause a break in a water main. Most often, this involves nearby construction and mistakes in the operation of heavy machinery on construction sites.