I invested in a countertop water distiller a while ago, the brand is Pure Water. This company certifies their products and does third party testing. The distiller is counter top style and cost me about $750.00. It also uses carbon filters. It takes about 3.5 hours to make about a quart of clean water. The other filter I have bought for my kids is the zero water picture. I like this one because you can test it with their tester and it's inexpensive about $35.00.