No. Softened water helps to prevent spots by reducing the number of minerals that can build up on surfaces. That’s because the main reason for spotting is hard water, which is water that contains high levels of minerals like calcium and magnesium. Those minerals are left behind when hard water dries and can cause spots.  On the other hand, softer water has had those minerals removed through an ion exchange process. As a result, it’s less likely to leave spots behind when it dries.