It’s no mystery where most of the salts are coming from. Water softeners and fertilizers are sources of chloride, but the major contributor, are the salts spread on roads, parking lots, and sidewalks to keep the pavement free from ice. A little salt can cause a lot of harm to our waterways. The U.S. EPA recommends water quality standards for rivers and lakes to prevent death and damage to fish, mussels, insects, and other aquatic species. Read the full story by Michigan Radio.