Conventional ultraviolet light systems can kill bacteria and viruses but can not remove chemicals, pesticides, micro-biological and other contaminants. They also demand high maintenance to remove foreign matter and contaminants that build up and block the ultraviolet exposure needed to be effective.

Reverse osmosis systems only remove certain chemicals and can’t kill bacteria or viruses. They require large storage tanks that can become contaminated, as well as frequent supplier maintenance and expense.

Under-sink carbon filtration Units can reduce chlorine, improve taste and remove some--not all--EPA identified chemicals and pesticides, but can’t reduce levels or remove any bacteria or viruses.

Faucet mounted carbon filters cannot reduce organic, chemical or microbial contaminants; can reduce chlorine.

Bottled waters have no purity standards imposed by any regulatory body and may be no purer than tap water. Using bottled water is very expensive.

Water coolers deliver water that has no purity standards and the cooler mechanisms are easily contaminated by bacteria.