By Siyao Long
While snow salt does its job, some people worry about the lingering pollution of the white residue it leaves behind.
The salt ends up in the sewage system and goes to water treatment plants. But there’s no special treatment process to remove the salt, according to Antonio Quintanilla, who works for the Metropolitan Water Reclamation District of Greater Chicago.
Photo at top:The city of Evanston does not have a water treatment plant. And its sewage water is treated at the O’Brien Water Reclamation Plant in Skokie. (Siyao Long/Medill)
