The rate of evaporation is affected by the water temperature, the air temperature, and the relative humidity of the air. So I think Rick is onto something. If your apt is that dry, adding a humidifier will make you feel and sleep a lot better
I've both humidifiers from the local drugstores like CVS, and they've always worked well. For winter time you, get a warm air humidifier.
Lately, my place has been too wet and I'm getting condensation on the windows, which leads to mold, which leads to yucky feelings. I had to buy a dehumidifier!