As water passes through the filter, the nonwoven element reduces sediment, while the carbon block traps smaller contaminants. According to Brita, standard filters work like a sieve, using carbon to reduce the mercury content and the taste and smell of chlorine. There is also an ion exchange resin for filtering zinc, copper and cadmium. The primary function of Brita filters is to remove the taste and odor of chlorine from the water.
All of your filters complete this task. And while some models are better than others at removing additional contaminants, none of them are up to the task of making water truly safer. Brita's new filter lasts 120 gallons and filters out heavy metals such as lead, making it a definite improvement over your old system. However, it still won't do much good for well water.
Clogging has been a problem with Pur filters, because fine bubbles get stuck in the filter media and prevent water from passing through. It's no obstacle to an occasional glass of water during the day, but if you find yourself filling three or four oversized water bottles before a family outing, it could be a big headache. However, private water systems are not subject to SDWA regulation, so it's best to ask a laboratory to test water for contaminants at least once a year. Even the most harmless particles can add undesirable flavors, so if you drink water alone, brew coffee or brew tea, a filter jug will help.
Clearly Filtered does not use a certification authority such as NSF or the Water Quality Association to test its products, but the results they publish on their website are credible due to the long filtration time. And while it filters all of that, it retains natural minerals in tap water that are essential for lasting health. You can also have an EPA-certified laboratory test your water or call the EPA Safe Drinking Water Hotline at 800-426-4791 for more information. People can use these filters to remove components of water that affect its taste, smell, or safety.
We watched the readings of a new Longlast filter for a few weeks, and after about 10 gallons, the 20% improvement it showed over a standard Brita filter disappeared. If you are looking for a reliable improvement in the taste of chlorinated water or an efficient way to prevent possible exposure to lead, Brita makes a good pitcher with an excellent filter. Along with other regulators, such as the american national standards institute (ANSI) and product manufacturers, the NSF establishes what is expected of a water filter, then they (or an approved partner such as the Water Quality Association) test and certify the products. A permanent solution may require the installation of a whole-house filtration system to treat not only drinking water, but also bathroom and kitchen water.
These filters remove almost everything from the water as long as the expensive ion exchange media continues to work.