While I was researching for a drinking system I saw Aqua Solutions in a local magazine ad running a promotion so I went there to check it out. It is a small showroom but they have a variety of different water filtration products. The salesperson explained how the reverse osmosis worked and showed me the results of the water test before and after the purification. I was amazed at how much impurities it filtered through so I bought their drinking system with a discount. The water tank is quite big so it takes up a lot of space under the sink but no leak so far. Excellent product and service.