Environment

Digging out: Let’s keep the de-icer, road salt out of our water supply

If you can, hold the salt, let the sun do its job.

While you’re excavating your sidewalk from beneath a foot-deep slab of snow, take it easy on the de-icer and rock salt.

First, de-icers can contain a variety of salt compounds, which can be harmful and/or corrosive to plants and pets. Second, when the glacier on your driveway melts, the water can whisk those salts into the street, the storm drain and directly into streams, creeks and even groundwater. Depending on where you live, these are potentially sources of drinking water.

The EPA suggests sodium in drinking water is safe up to 20 parts per million. But a 2008 study in Duchess County, N.Y., (which receives a lot more snow, and thus uses more salt), showed that on average, the drinking water wells contained twice that amount. The Cary Institute of Ecosystem Studies issued a report in December 2010 that gives a fuller explanation of the problem, including the fact that in rural and particularly snowy areas, (e.g. the Carolina mountains), it can take years for the salts — which can be toxic and corrosive to aquatic life — to flush out of the environment.

If you need another reason to be suspicious of fracking in North Carolina, Scientific American reported in 2015 that states which have oil and gas drilling often use the salts from those operations in their road brine. The chemical soup then flows off the roadways and can enter water supplies. Imagine if these types of salts were used on roads near coastal waters, estuaries and sounds — as well as North Carolina’s many lakes. For example, US Highway 64 runs over Jordan Lake; Highway 50 over Falls Lake, and Highway 150/I-77 over Lake Norman.

The takeaway: Falling on the ice is a good way to pull up lame, so safety is paramount. However, don’t use more de-icer than you need, and if possible, let the sun work its magic.

Check Also

Fence at Umstead would be “permanent eyesore,” says NC Parks to RDU Airport Authority

The RDU Airport Authority today delayed a vote ...

Top Stories from NCPW

  • News
  • Commentary

WASHINGTON — The U.S. House passed a resolution Thursday that would overturn a Trump administration [...]

North Carolina is projected to gain a U.S. House seat in the coming years, recent data show — a chan [...]

New facilities and policies offer hope to 16 and 17 year-olds once consigned to the adult correction [...]

State Rep. Holly Grange (R-New Hanover) failed to disclose a business owned and operated by her husb [...]

The post An apple for teacher. appeared first on NC Policy Watch. [...]

There is a temptation—and believe me, I understand it—to celebrate the fleeting nature of this week’ [...]

The North Carolina General Assembly is back in Raleigh this week and, as noted in this space last Fr [...]

The post DTH making its mark on Silent Sam settlement appeared first on NC Policy Watch. [...]