Water Purification Systems and Contaminant Removal

What Contaminants Do You Want To Target?
If you’ve decided you need a home water purifier, the next step is to decide what type of contaminants you want to filter out or protect against. Are you concerned about bacteria and other microorganisms? Do you want to remove chemicals and compounds such as chlorine? Maybe you know your water contains sediments and high mineral content. Or perhaps like many people, you’re concerned about all of these things and you want a comprehensive home water purifier/filtration system.

Bacteria and microorganisms
If bacteria and other organisms are your targets, then you want to consider home water purifiers that use UV technology. Of the three most common water purification technologies, UV is the only one that effectively immobilizes bacteria. However, it does not remove sediments, chemicals and other contaminants.

Chemicals and sediments
Home water purifiers that use either carbon filters or reverse osmosis technology will remove suspended solids such as sediments, dissolved chemicals, and many other contaminants. Of the two, reverse osmosis is effective on a wider range of contaminants. However, neither of these technologies is effective at removing bacteria.

For a comprehensive home water purification system, it is important to combine UV technology with one of the other options. A carbon pre-filer is the most common choice. It’s also critical that you change your home water filters regularly and follow manufacturers’ maintenance schedules. If you don't routinely change the filters on your home water filters and water purifiers, you could wind up creating an even bigger problem with bacteria than the one you may be trying to avoid in the first place.

Where Will You Put Your Home Water Purifier?
Where you want to locate the filter/purification system can also influence your decision. Faucet mount and counter top water filters typically only come in carbon filter technology. You can usually find both carbon filters and reverse osmosis water filters in under sink systems. And both reverse osmosis and UV technologies come in whole house systems. Each of these can also be fitted with a carbon pre-filter for comprehensive treatment.

If your only concern is your drinking water, then you may prefer one of the many countertop or under sink water filters. They are less expensive than whole house systems, ranging from about $20 to $30 for a countertop pitcher or faucet filter to around $200 or $300 for an under the sink model. The under sink water filters are capable of processing water much more quickly, and the filters tend to last longer.

If you want to treat your bathing water and keep sediments and bacteria from building up in your appliances, then you will need to consider a whole house water filter system. They start at around $400 for basic models and can cost upwards of $1000 for high-end systems. In the end, your budget may be the ultimate factor in your decision.