But rock salt's low cost does not include the potential damage to property, infrastructure, or the environment. Rock salt is very effective at melting snow and ice and is considered to be pretty cheap. Nearly half a million tons is used annually in Massachusetts alone for winter road maintenance. The most common substance used for deicing roads and highways is Sodium Chloride (NaCl) or table salt known as rock salt when spread on the road because of its much larger granules.
Alternative methods are needed to mitigate these drawbacks. Road salt can contaminate drinking water, kill or endanger wildlife, increase soil erosion, and damage private and public property. The many benefits that road salting provides, however are matched by some opportunities for improvement. The amount of salt used for deicing roads and highways has increased over the years along with the year-round transportation of goods and services. In New England, road salting is a necessity to keep people safe during snow or cold weather as they drive to work or take their kids to school. Snow came early this year, and with it snow/ice road maintenance.
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