Column: Embrace ‘smart salting’ to save lakes and water sources from contamination

The use of road salt has been getting a lot of airtime these past few months. Why? Because it’s wreaking havoc on our natural environment. While salt can control ice and keep us safe during our winter travels, it doesn’t tend to stay where we put it. A University of Minnesota study found that about 78 percent of road salt applied in the Twin Cities winds up in either our groundwater supply or our local lakes, streams, and rivers. That means only 22 percent of the salt we use is actually doing what it’s applied to do. And we can see the results of this already – the Minnesota Pollution Control Agency reports that groundwater in Minnesota’s urban areas exceeds the state standard for chloride (salt) contamination. Additionally, they’ve found that 39 bodies of water in the Twin Cities, including Minnehaha Creek, test above the state standard for chloride. What’s the big deal? Well, one teaspoon of salt permanently pollutes five gallons of water. This means that if your groundwater becomes contaminated with chloride, the water from your tap may start to taste a little salty (and removing salt from water is prohibitively costly on a large scale). Too much salt also can impact your favorite things to do in and around water. Chloride is toxic for…