Whole House Water Filters

Chlorine is a gaseous element that appears in various compounds. As an exceedingly potent oxidizer, it can induce the loss of electrons from other substances. Consequently, it serves as a highly efficient disinfectant - when living cells encounter chlorine in water, their outer membranes undergo electron loss, leading to disintegration and death. Unfortunately, this trait also renders chlorine poisonous to humans and other creatures.

Chloramine is a disinfectant employed in numerous water treatment plants to eliminate hazardous pathogens and bacteria. It is frequently utilized as a substitute for free chlorine since it generates fewer byproducts and lingers in the system for an extended duration, providing added safeguard as the water flows through pipes and into residences. However, chloramine present in water can trigger several potential side effects, such as causing an unpleasant taste and odor.

Activated Carbon is the most effective and affordable process for removing chemicals such as chlorine, chloramine, VOCs, pharmaceuticals, toxins, PCBs, THMs. It can even reduce PFOAs and PFAs. Activated carbon can trap contaminants through a process called adsorption. Adsorption is different than absorption, adsorption is a process where molecules adhere to the outside surface of the carbon substrate rather than soaking into the substrate.

Activated Carbon is effective because it is chemically fertile. That is because it has a large amount of surface area relative to its mass. This means there are millions upon millions of pockets and pores that chemicals can adhere to throughout the filtration process. This means that 1 cubic foot of activated carbon can effectively filter tens of thousands of gallons of water at the proper flow rate.

There are hundreds of different manufacturers and hundreds of different types of activated carbon used for different industries and applications. US Water Systems is committed to only providing the safest and highest grade activated carbon available on the market.

Manufactured and imported from Sri Lanka, our activated carbon is made quite literally from charred coconut shell remains. This makes it safe, certified, and eligible for food grade applications. There is presently no US-based carbon manufacturing due to environmental regulations. In addition to high quality of the material, the carbon is also washed, meaning it will not be contaminated with fine dust or debris, ensuring the highest quality water upon initial installation.

At US Water Systems, we recognize that municipalities employ multiple disinfection techniques. Some municipalities will alternate between using chlorine and chloramine as residual disinfection. That is why our Bodyguard and Bodyguard Plus filter systems use a special blend of two unique carbons in our systems. Catalytic Carbon, which has a strong affinity for chloramine, and Granular Activated Carbon, which has a stronger affinity for chlorine.

Backwashing Filters
A Backwashing Filter's service flow will always be “down-flow” configuration. This means that water will enter the tank chamber at the top, flow downward across the carbon media, then up through the center tube. On a schedule that you dictate, the filter will “backwash” This will reverse the flow of water, and discharge to the drain for a typical interval of 10 minutes. This will flush the carbon bed of any non-chemical impurities that may have entered the tank. The backwash sequence will also lift and redistribute the carbon in the tank, which prevents a phenomenon known as “channeling.” Channeling is when water forms a small river through the media bed by taking the path of least resistance. This is only a risk for filters plumbed in the “downflow” configuration.

We recommend backwashing filters in homes that are vacant for long periods of time or home that are on well water. The backwash cycle will clean out the tank at a time interval you designate, keeping the tank fresh and preventing the water from turning eutrophic.

If your residence does not have readily available drainage accommodations at the install location, or if you use water consistently year round, or if you are focused on minimizing your environmental impact, a non-backwashing system may be best for you as no drainage or electricity is required.

Non-Backwashing Filters
A Non-Backwashing Filter's service flow should always be in the “up-flow” configuration. This means that water will enter the tank via the center distributor tube, travel downward, and enter the tank chamber through the bottom plate of the tank. This water then travels upwards across the layered media bed consisting of a washed gravel base, KDF-55 Media, granular activated carbon, then catalytic carbon. This upward flow of water fluidizes the media so it will not be subject to channeling as it is working against gravity.

This layered solution allows you to forego the backwash function which allows for a carbon filtration system with zero drain required and no electricity required. The non-backwashing carbon filter is a green and eco-friendly solution for effective chemical removal.

Fluoride has been added to tap water in the United States since the 1940s, and today, it is estimated that over 70% of the U.S. population has access to fluoridated drinking water. The Centers for Disease Control and Prevention (CDC) considers water fluoridation to be one of the most effective public health measures in reducing tooth decay.

Fluoride in tap water is typically added in the form of either sodium fluoride, sodium silicofluoride, or fluorosilicic acid. The concentration of fluoride in fluoridated water typically ranges from 0.7 to 1.2 parts per million (ppm).

Despite its benefits, fluoride in tap water has been the subject of much controversy. Some individuals and groups have raised concerns about its potential health effects, including:

• Dental fluorosis: A condition in which the enamel on the teeth becomes discolored or mottled due to excessive fluoride intake.
• Skeletal fluorosis: A condition in which fluoride accumulates in the bones, causing them to become brittle and more prone to fractures.
• Thyroid problems: Some studies have suggested that fluoride may disrupt thyroid function and contribute to hypothyroidism.
• Neurological effects: Some studies have suggested that fluoride may affect brain development and lead to lower IQ scores in children.