The Q&A session for this topic is Q&A 7: Reducing Chloride Contamination through Softener Optimization.
U.S. water supplies are getting saltier at an alarming rate. A U.S. Geological Survey study analyzing 50 years of streamwater data indicates that 37% of the watershed areas of the U.S. show a "significant increase" in salinity, and it is now known as the "Freshwater Salinization Syndrome." In the northern tier of states, road salt deicing contributes much of it; however, even in Minnesota, water softener discharge is in second place, contributing 65% of all the sodium chloride discharge to wastewater treatment plants. In addition to the aesthetic effects of saline drinking water, sodium chloride affects health, the environment and our basic infrastructure in many ways. This presentation address the numerous sources of sodium chloride contamination, details the deleterious effects and discusses various remediation strategies.