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Culligan Water Learning Center

Water Softeners

Hard water is a common problem in many households across the United States. If you’ve ever had to clean soap scum off of shower walls, had water scale clog up your pipes, or your freezer has produced milky, cloudy ice cubes, you have experienced some of the common problems associated with hard water. But what is hard water? Put simply, hard water is water that has a high mineral content. The minerals in the water prevent soap from sudsing properly, leave a white film or residue behind, and can result in damage to water heaters. A simple water softener is often all that is required to treat hard water. Treating hard water with water softeners can help you both reduce water use and save money on water.

case for home water filteration

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Water Filtration Systems

There is no such thing as 100% pure tap water. All tap or well water contains some degree of dissolved solids or minerals. While not all minerals in water are harmful, it’s important to have your water tested to ensure it is free of undesirable pollutants. If particulates are found in your water, a home water filtration system can be easily installed in your main water line. Home water filtration systems improve water quality and taste in your kitchen, bathroom and laundry by removing iron, silt and other sediments. Under sink water filtration systems are ideal solutions for those looking to remove chlorine, lead, bacteria and sediment from just tap water. Your local Culligan dealer will be happy to assist you in determining the best home water filtration system to meet your needs.

Lean about contaminant levels in your area! The University of Cincinnati performed an independent study to review drinking water contaminant levels across the U.S. The data gathered was used to create an interactive chart that shows the drinking water quality and amount of contaminants in drinking water across 80 major metropolitan areas. Learn more about the U.C. Water Study.

Salt Delivery

Salt is one of the main components of a water softener and must be resupplied in order for the system to continue working correctly. So just how does a water softener work? In the simplest terms, hard water passes through a filter that contains negatively charged resin (plastic) beads. The resin beads attract and filter out calcium and magnesium minerals from the water – the two main culprits of hard water. The newly soft water then passes through the filter and into the home. Water softener salt is required for cleaning the water softener system, also known as regeneration. During regeneration, positively charged salt ions force the magnesium and calcium off of the resin beads. The salty regeneration water is then flushed out of the softener and down the drain. Culligan offers convenient water softener salt delivery and service programs, regardless of which brand of water softener you use.

Bottled Water

Culligan provides consumers with four types of bottled water: premium purified water, fluoride added water, demineralized purified water and spring water. Depending on the type of bottled water, the water undergoes a specific treatment method, which may consist of: distillation, micron filtration, ozonation, ultraviolet light filtration and/or reverse osmosis. Reverse osmosis is the most technically advanced water treatment process for bottled water, and is able to remove microscopic impurities and chemicals far beyond the capabilities of a standard carbon water filter. Culligan bottled water meets the bottled water standards set forth by the FDA and IBWA. Bottled water is packaged in sanitized containers and in a sanitary environment. Once delivered, store bottled water at room temperature or colder and out of direct sunlight.


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Glossary of Common Water Filtration and Water Purification Terms


What is in my water? Do I need a water filter?

Is my water safe to drink? What is in my tap water? No doubt, you’ve likely asked yourself these questions before. To ensure public health, the Environmental Protection Agency (EPA) regulates the levels of harmful chemical contaminants and microorganisms in public drinking water. The National Primary Drinking Water Regulations established by the EPA are legally enforceable and apply to approximately 90 contaminants.

However, it’s important to note that the EPA does not regulate all water contaminants and is constantly developing new Candidate Contamination Lists (CCLs). CCLs are lists of currently unregulated water contaminants for which the EPA is considering whether regulatory levels should be set. Some examples of currently unregulated water contaminants include: Dimethoate (an insecticide used on crops), estriol (an estrogenic hormone used in pharmaceuticals), and methanol (an industrial solvent and gasoline additive). These chemicals and thousands of others may be present at any level and in any amount in water.

Since 2004, the non-profit Environmental Working Group (EWG) has detected over 300 contaminants in public drinking water, more than half of which are unregulated. While not all chemicals and microbiological organisms in water have proven harmful to human health, the long-term effects of many have yet to be studied.

While public municipalities treat drinking water with chlorine and fluoride to help disinfect water and kill bacteria, this also serves to add to the number of chemicals being ingested by the consumer.

Whether for peace of mind, to improve water taste or simply to treat hard water, many homeowners today can benefit from the use of a home water filtration system.

"It is important to keep in mind that no individual water treatment device removes every contaminant from drinking water. Depending on the severity of contamination, it may be necessary to replace your source of drinking water by developing an alternative water supply or purchasing bottled water."  ~ Cornell University Cooperative Extension, Water Quality Information for Consumers.

Did You Know?

Water can dissolve more substances than any other liquid including sulfuric acid.

American residents use about 100 gallons of water per day.

The average faucet flows at a rate of 2 gallons per minute.  You can save up to four gallons of water every morning by turning off the faucet while you brush your teeth.

A gallon of water weighs 8.34 pounds.

A cubic foot of water weighs 62.4 pounds.

(Source: EPA.gov)