Distilling at home puts you ahead in the long run. The Running Water residential distiller costs about $0.12 per gallon to operate. You can do the math, depending on how much bottled water you use, you could be coming out ahead sooner rather than later. There are also no more bottles to carry from the store, no more worrying about running out of water. You always have pure water when you need it- for drinking, cooking, your pets- whatever. Running Waters, Inc.