Schedule a FREE home water test with a Culligan Water expert today!

MM slash DD slash YYYY

HAA5 In Your Water

HAA5, or haloacetic acids, refer to a handful of compounds that occur in tap water as a result of common municipal treatment methods such as chlorination.

HAA5 can also result in water that is treated with chloramines. These acids are created when organic and inorganic materials already present in water react with the disinfectants (chlorine, chloramine) used to make water drinkable.

The specific HAA created as a result of this exposure depends on the organic or inorganic material itself, as well as the treatment – usually chlorine or chloramine. Since HAA5 appears in water after treatment, they’re commonly referred to as “treatment byproducts.”

Both chlorine and chloramine are common methods used by cities and municipalities to treat water for homes and businesses. It’s a concern for some populations because certain kinds of HAA5 have been found to cause cancers in lab animals. Other side effects include skin irritation, skin inflammation, and even birth defects.

Where Can I Find A Haloacetic Acids Water Filter?

Once HAA5 has formed, removal can be done by reverse osmosis. However, technologies such as anion exchange, advanced oxidation, granular activated carbon (GAC) filters have also proven effective.

Reverse osmosis uses a semi-permeable membrane to remove a wide variety of water contaminants, including HAA5.

HAA5 vs HAA9: What’s The Difference?

The “5” and “9” refer to the number of chlorinated and brominated species each group contains. HAA9 consists of the five HAA5 species plus an additional four species: tribromoacetic acid, bromochloroacetic acid, dibromochloroacetic acid, and bromodichloroacetic acid. Monitoring and managing both HAA5 and HAA9 is essential for ensuring water safety and regulatory compliance, particularly in areas where bromide is present in the water supply.


Suggested Products

Culligan Smart Reverse Osmosis Filter System

The Aquasential® Smart Reverse Osmosis Water Filter (RO)

  • 7 stages of filtration and 12 filter options
  • Certified for reduction of 58 contaminants
  • 2-in-1 sediment and carbon filter screens out sediment and particles
  • Can alert you and your dealer when service or filter replacements are needed
HE Smart Whole House Water Filter

Aquasential™ Smart High Efficiency Whole House Water Filters

Reduce sediments in your water and contaminants that cause your water to appear, taste, and smell unpleasant. Your system can also lessen the taste and odor of chlorine, and prevent pipe damage and staining from low pH water. Additional customizations include:

  • Culligan® Filtr-Cleer® Water Filters – Reduces Sediment Problems
  • Culligan® Cullar® Water Filters – Reduces Taste and Odor Problems
  • Culligan® Cullneu Water Filters – Reduces Acid Problems