Do you drink water that's been left sitting out overnight or even for another day? Have you noticed it tastes different?
Tap water that has been left to sit out slowly begins to acquire off taste. Many people think that this is because of microorganisms. But that's not what makes old water taste not fresh. For that we can thank carbon dioxide. After about 12 hours, tap water starts to go flat as carbon dioxide in the air starts to mix with the water in the glass, lowering its PH and giving it an off taste. But it's most likely safe to drink.
However, back to those microorganisms. If you use a dirty glass day after day, there is more of a chance of bacteria making themselves known; a risk that increases if you share the glass with another mouth as well. But assuming you use a fresh glass every few days, you probably won't have a problem unless the glass has been touched by dirty fingers, and especially if those dirty fingers went unwashed after using the bathroom.
As for plastic water bottles that have been left out in the sun or in the car, step away from the bottle, warns Dr. Kellogg Schwab, director of the Johns Hopkins University Water Institute. "A chemical called biphenyl-A, or BPA, along with other things used to make plastic can leach into your water if the bottle heats up or sits in the sun," he explains. BPA, as you probably know, has been linked to everything from heart disease to cancer. Schwab also adds that plastic used for commercial bottled water isn't meant to be washed or refilled, so use only one time and recycle. Or don't buy them at all; use refillable water bottles instead.
Activated carbon filters are the most common and effective way to filter our drinking water from the water supply. They bond with contaminants as water passes across the carbon. A single pound of activated carbon has 200 miles of pores and fissures, and offers an absorbing surface area of 4 million sq ft. Carbon is extremely effective at removing chlorine, heavy metals, bacteria and cysts. The filter attracts the contaminants at a molecular level – effectively they get stuck to the carbon filter. This means the filtration rate will slow with use and eventually needs replacing.
DiscountFridgeFilter.com Activated Carbon Water Filters Highlights:
1.Most effective at removing chlorine;
2.Filter lead, mercury, chlorine, pollutants, pesticides, pharma, cysts;
3.Best for great tasting water;
5.Portable, lightweight and easy to install.
1.Quality of different carbon filters varies dramatically;
2.Requires filter replacements every six months.