How to choose a personal water filter?
Some helpful tips for you to find a suitable filter
What should you know to choose a water filter? NSF certification can assure those certified products whether it works. Here are some helpful tips for you to find a suitable filter.
- 1. Find out what exists in the water
- 2. Confirm what contaminants you want to reduce
- 3. Make a comparison of different water treatment
- Point-of-use systems (POU)
- Whole-house/point-of-entry (POE) systems
- Point-Of-Use Filters
- Personal water bottles
- Pitcher, dispenser or pour-through filters
- Faucet mount filters
- Under-the-sink or plumbed-in systems
- Under-the-sink systems piped to a separate faucet type
- Plumbed-in to separate faucet systems
- Refrigerator filters
- Whole-House Filters
- UV microbiological treatment systems
- Water softeners
- Whole-house chlorine filters
- NSF’s Drinking Water Standards?
You can get a copy of your water quality or water testing report (called a CCR or consumer confident report) from your local water utility (in the US and some cities in Canada). If the water source is from a private well, you should consider to have an independent testing.
After you understand what contaminants exist in the water, it’s better for you to find a certified water treatment system to deal with water quality concerns.
Certainly, not all water filters can reduce all contaminants. Based on the water report or the water testing results, you can determine what contaminants should be reduced in the drinking water. NSF standard is the key point to help you identify the certified products that can reduce specific contaminants.
There are different kinds of water treatment systems, but their functions are not same. Whole-house systems can treat all the water in your home. Drinking water filtrations and portable solutions such as water pitcher can remove contaminants. However, the efficiency of filtration is different. Some reduce only one contaminant but others reduce many.
Point-of-use (POU) systems treat the water where you drink or use your water, including water pitchers, faucet filter and reverse osmosis (RO) reduce fluoride and nitrate; and Reverse Osmosis systems are the only ones that are NSF certified to reduce both lead and copper.
Whole-house/point-of-entry (POE) systems treat the water as it enters a residence. They are usually installed near the water meter (municipal) or pressurized storage tank (well water). Whole-house treatment systems include UV microbiological systems, water softeners or whole-house filters for chlorine, taste, odor and particulates.
NSF formulates a series of appropriate standards to each type of water filtration products. These standards allow manufacturers to certify their products to reduce a variety of contaminants. To review the protocols and NSF/ANSI standards that cover home water treatment systems, visit Standards for Water Treatment Systems.
@NSF International
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