Most of us think of road salt as a winter safety tool, and it is. It helps prevent slips, falls, and crashes.
But here’s the part that doesn’t get talked about enough: excessive salt use can damage infrastructure and accelerate corrosion in water pipes. That corrosion can contribute to lead getting into drinking water.
The key player is chloride, a major component of road salt. Chloride is highly corrosive and is known to mobilize heavy metals.
Homes and businesses with certain plumbing materials (including older lead or copper plumbing) can face higher risk when chloride levels are elevated.
Why this matters in real life, not just in reports:
- The EPA estimated (as of November 2025) that there are about 4 million lead service lines in the U.S., concentrated in older areas.
- Lead exposure is a serious health concern, and the risks for children are especially damaging even at low levels.
So what can you actually do?
Start with the simplest, highest-impact steps:
- If you want to know whether lead is in your drinking water, test your water.
- Reduce over-salting at home. More salt doesn’t automatically mean safer, especially if you’re not shoveling first.
- Join Salt Watch and help measure chloride in local waterways. You can request a free kit and contribute local data that communities can use to guide smarter winter maintenance.
Winter Salt Week (Jan 26–30) is coming up fast, and it’s a great time to learn practical approaches that keep people safe while protecting freshwater and drinking water systems.
Winter Salt Week hub/registration: https://wintersaltweek.org/
Salt Watch kit request: https://iwla.org/salt-watch/
EPA Safe Water (general info): https://www.epa.gov/safewater/
