Why Does the faucetts in my house sputter a bit ( like air in the lines, at times) when I turn them on, Hot, & Cold?
I believe that water underground, esp. in deep well can be highly pressurized.  That increases the amount of gasses that can be dissolved.  Bringing the water to the surface reduces that pressure and the dissolved gasses form real gasses (mostly oxygen and nitrogen) again.  That leads to an occasional &quot;spurting&quot;.  I've never figured out why it's so random, but I've experienced the same thing on the water from my well.   I'm not sure of all of this, but that's what I think happens.