As water purification technology improves, it can be difficult to keep up with the latest innovations. RO, or reverse osmosis, uses a semi-permeable membrane that uses applied pressure to overcome osmotic pressure. While not technically a filtration method, reverse osmosis removes many different types of ions and molecules from water and other liquids. It can be used in industrial processes as well as the purification of drinking water. The result of the selective RO process is that the membrane doesn't allow large molecules or ions to pass to the pressurized side, but it does allow the pure solvent or water to enter.
Not everyone has noticed a funny taste or unusual color to their tap water, but it all depends on where you live. Some communities enjoy high quality water while others must deal with water that is hardly even potable.
Life; it used to be so much simpler, and not that long ago. When we were thirsty we would simply turn on the kitchen faucet, let it run until the water was nice and cold, then guzzle it down. No guilt, no worries, just a simple glass of tap water. Sure, it's easy, cheap, and convenient – but is it safe?
We've all heard about the dangers of unfiltered tap water, whether it is for drinking, cooking or washing your hair. Depending on where you live, various contaminants and minerals may be present in tap water, changing its taste and even its color. Bottled water suppliers have enjoyed a long period of profitability, but disposable bottled water is neither economically nor ecologically sound.
A lot of bottled water brands are lumped into the same category – "spring water" – but that is no longer an accurate description. At the beginning of the bottled water phenomenon most of the popular water brands sold only mountain spring water; but as demand grew and pricing became more competitive, "purified drinking water" became more common.