What freezes faster, tap water or distilled water and why?

Question

Consider that tap water has dissolved gases which keep the moleules of water from coming closer to each other. That is why some ice is cloudy.

Answer 1

I put 2- 1 gal jugs outside last night, 1 filled with tap water and 1 with distilled water. Temperature was 26 degrees F. Checked this morning and the tap water one was froze, the distilled one was not. It wasn't even slushy. Everything I read says the distilled one should have also froze. Anyone that can answer that one?

Answer 2

 @guest9191, doesnt that mean your tap water is some others' distilled water? personally, i would say it is distilled water that freezes faster.