Being in the health business, I've always been concerned about my family's water quality. For years I've used a steam distiller to purify our water, then poured it into another brand of filtered reservoir to "polish" the distilled water so it tastes OK. The distiller takes 8 hours to complete its cycle (producing only 1 gallon of HOT water) & the reservoir's drip-type filter is very slow (which adds additional time to the process). Also the steam distiller puts off a lot of heat, so I dread using it in the summer months. 
My ZeroWater reservoir makes the entire process simple, fast, & without heating up my entire kitchen in the summer! The added benefit of providing me with a water tester really tops it off because now I have piece of mind that my family's water has been thoroughly filtered!
Thanks ZeroWater, I'm a customer for life?