Takes the faucet filter idea one step further. Often portable, convenient and easy-to-hook-up systems, countertop purifiers can employ reverse osmosis and other bacteria killers by filtering the water through a system of tanks. They provide around 90 gallons of water per day, and are excellent choices for apartments and cottages. For further information also see water treatment Australia.
Filter all water through your home from one location. This is ideal for highly polluted water sources, but can be expensive, since you are filtering even shower water. Some come with multiple filter cartridges designed to clean chlorine, lead, dissolved iron, hydrogen sulfide, sulfur and heavy metals. Some models take care of bacteria with UV lamps or other methods but require larger reservoir tanks. A limitation of Point-of-Entry (POE) systems is that the water must still travel through your home pipes prior to use, where it may pick up contaminants such as bacteria or lead.
These familiar and economical filters come in a variety of plastic shapes with two chambers. Pour the water from the tap into the top, and freshly filtered water seeps through into the lower chamber. Replacement filters often last about 3 months. Clean the pitcher regularly to prevent waste and scum buildup.
These units provide cooled and well-filtered water from inside your fridge. Most appliance brands provide fridge filters or have the capability for filter installations.
These versatile, convenient and sometimes pocket-sized filtering systems are great for travel, emergencies, and other remote applications. Many portable devices filter out bacteria or virus threats, and can take care of other pollutants greater than 0.2 microns. Beware of compact systems with poor flow rates and stiff pumps. When you’re out in the woods or traveling a distant land, reliability and durability are most important!
Atmospheric Water Generators
A technology gaining recent attention is atmospheric water generation, or water systems that draw water from the humidity in the air and purify it for drinking. Water generators are humidity and temperature driven machines. This means the machine totally depends on the level of humidity in the air and the temperature to produce water. Ideally, the humidity level should be at least 55% and the ideal temperature is 65o F or above to achieve the machine’s optimum performance. In areas with high humidity, these units produce not only great tasting, pure drinking water, but also act as a perfect dehumidifier. In places with lower humidity levels, the machine will still produce water but not as quickly, nor as much as in places with high levels of humidity. Average water production is 5 to 10 gallons per day, depending on the unit and local conditions.
Air is drawn into the unit where it goes through filtration and is cooled. As the air cools, water condenses on coils then passes through a filtration system (usually carbon) and disinfection process (usually ozonation or UV light treatment.). Power consumption is minimal. It requires no plumbing, water lines or plastic bottles and manufacturers claim that it dispenses 99.9 percent pure drinking water.