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Water Quality

In-home Filtration and Treatment Devices

From carafe-style filters to whole-house water softeners, consumers buy them by the thousands. But are they worth the money?

The first thing you need to know is this: Unless you have a special medical condition, you probably don’t need to buy a water filter. Liberty Utilities monitors for more than 200 constituents and draws more than 6500 samples a year to make sure the water supply delivered to your  home or business meets strict federal and state water quality standards. Some customers may object to some of the non-health related aesthetic tastes or odors from tap water, usually associated with chlorine, a disinfectant that is required to be in the water. That said, we recognize that you may have excellent reasons to purchase an in home treatment device.

If you feel it necessary to purchase a home treatment device, we suggest that you make sure that the device has been certified by a third party testing organization to certify that the device can achieve what the manufacturer claims.  In fact, if a treatment device manufacturer claims that a drinking water treatment device will reduce toxic chemicals or makes other health related performance claimes, the device must be certified by the California Department of Public Health (CDPH) to be sold in California.  Make sure any treatment device you purchase has state certification.  You can access a complete list of these state certified treatment devices and other important information at the following web site:

CDPH does not certify water filters that make only aesthetic claims, or in other words, reduce taste and odor.  However, other third party testing organizations do under ANSI/NSF Standard 42.  These organizations include the National Sanitation Foundation (NSF), Water Quality Association (WQ) and Underwriter Laboratories (UL).  Web sites for these organizations are shown below.

Liberty Utilities can provide you with a “Frequently Asked Questions” paper from CDPH about certified water treatment devices.  If you would like this, please contact our Customer Service Department or call 562-923-0711 x 1234.







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