That’s because salt, rainwater and snowmelt drain into the storm sewer system, which then discharges into Lakes Mendota and Monona, UW-Madison limnologist Hilary Dugan told the Cap Times last year.
“The city has been very forward-thinking in reducing (its) salt use,” Dugan said. “It’s frustrating when you cross over from city-maintained paths to campus-maintained paths because the sudden change in practice is just so noticeable.”