Chlorine is commonly used to treat mains water, helping control microorganisms as water moves through the supply system. While this treatment is important, some homeowners do not like the chlorine taste or smell in their drinking water.
The good news is that chlorine can be reduced with the right type of water filtration.
For many homes, activated carbon filtration is the key. Carbon works differently from sediment filters and UV treatment, so understanding what each stage does can help you choose the right water filtration system.
UV Water Systems uses carbon filtration as part of its multi-stage water treatment systems and provides systems designed for different water sources, including mains water.
Why Is Chlorine Added to Water?
Chlorine is used in water treatment to help control microorganisms in the public water supply.
By the time mains water reaches your home, it may still contain residual chlorine. This is not necessarily a sign that something has gone wrong. It is part of the way treated water is managed through the supply network.
However, some people notice the chlorine through the water's taste or smell.
If that is an issue in your home, filtration can help.
Can a Water Filter Remove Chlorine?
Yes. Activated carbon filters can effectively reduce chlorine from water.
Carbon filtration works through adsorption. As water passes through the carbon media, chlorine and certain other compounds interact with the carbon surface.
This can reduce the chlorine taste and smell that some households notice in mains water.
UV Water Systems' current information specifically states that its carbon filtration is used for chlorine removal, as well as taste, smell, discolouration and certain chemicals.
The important point is that not every water filter is designed for chlorine removal. A basic sediment filter, for example, has a different job.
What Is an Activated Carbon Filter?
Activated carbon is a type of filtration media with a large surface area.
When water passes through the carbon, certain compounds can attach to its surface. This makes activated carbon useful for reducing chlorine, taste and odour compounds.
UV Water Systems uses a 5-micron carbon filter in its filtration setups for applications where carbon treatment is required.
The carbon stage is not there to catch everything. It has a specific role within a larger filtration system.
How UV Water Systems Uses Carbon Filtration
A multi-stage system allows different filters to handle different parts of the water treatment process.
For example, a typical setup can include:
Stage 1: Pleated 5-micron filter
This stage handles sand and sediment.
Stage 2: Carbon 5-micron filter
This stage addresses taste, smell, discolouration and chemicals. For mains water applications, it can also reduce chlorine.
Stage 3: Melt blown 1-micron filter
This stage helps catch small particles remaining after the earlier filtration stages.
After filtration, water can move into the UV chamber when UV treatment is part of the system.
This staged approach means the carbon filter does not have to do the work of the sediment or final polishing filters.
Why Chlorine Removal and UV Treatment Are Different
It is easy to assume that UV treatment can replace carbon filtration because both are used in water treatment systems.
They do different jobs.
Carbon filtration helps reduce chlorine, certain chemicals, taste and odour.
UV treatment is used to sterilise water by exposing it to ultraviolet light.
UV light does not remove chlorine. If a household wants to reduce chlorine from mains water, a carbon filtration stage is needed for that purpose.
UV Water Systems explains that its systems combine filtration and UV treatment because the different stages address different water quality concerns.
This is particularly useful when a home wants both improved taste and odour and protection against microorganisms.
Why Filtration Comes Before UV Treatment
Sediment filtration is not only about making water look cleaner.
Particles and turbidity in water can affect UV treatment. The UV light needs to reach the microorganisms in the water during the treatment process.
That is why the filtration stages need to be correctly selected and maintained before water reaches the UV chamber.
UV Water Systems' approach uses filtration to prepare the water before it reaches the UV stage.
This is an important difference between a properly designed system and simply adding a UV lamp to a water line.
How Long Does a Carbon Filter Last?
The lifespan of a carbon filter depends on the water entering the system and how much water the household uses.
UV Water Systems states that its cartridges are tested to last around 9 to 12 months under suitable conditions.
However, a filter may need to be replaced sooner if the incoming water contains a high amount of sediment or other material.
This is why filter replacement should not be based only on a calendar date.
If the water source is placing a heavy load on the filter, its useful life may be shorter.
What Can Cause a Filter to Work Harder?
The condition of the water entering your home filtration system makes a big difference.
For rainwater systems, dirty gutters, overhanging trees and a dirty water tank can introduce additional material into the water.
UV Water Systems notes that these conditions can cause cartridges to stop lasting as long as expected.
For mains water, the filtration requirements are different. The system may need to focus more on issues such as chlorine, taste and odour.
The right setup therefore depends on the water source rather than simply choosing the same filter for every home.
What Happens If You Use the Wrong Filter?
A filter should be selected according to the system and the water quality it is designed to handle.
Some homeowners may choose a higher-micron or uncertified filter because it offers less resistance and may improve water flow.
The problem is that larger filter pores can allow more contaminants to pass through.
UV Water Systems recommends using correctly rated, certified cartridges. Where flow is a genuine concern, the company also offers radial carbon options designed to help with flow without simply opening up the filtration pores. These are identified by an "H" at the end of the filter set code.
Does Carbon Filtration Remove Everything?
No.
This is an important point when choosing a water filtration system.
Activated carbon is useful for chlorine, taste, odour and certain chemicals, but it is not designed to solve every possible water quality problem.
Different contaminants require different treatment methods.
This is why UV Water Systems uses a staged approach. Sediment filtration, carbon filtration, fine filtration and UV treatment each have a particular role.
Trying to make one filter handle every contaminant can lead to the wrong system for your home.
What About Tank Water?
Chlorine removal is usually more relevant to households using chlorinated mains water. Rainwater tank systems have different concerns.
Rainwater can collect material from the roof and gutters before entering the tank. Sediment, organic matter and other contaminants can then become part of the water supply.
For these homes, the priority may be sediment filtration and UV treatment rather than chlorine reduction.
This is another reason why the water source should be considered before choosing a filtration system.
Keep Your Filtration System Maintained
Even the right filtration system needs regular maintenance.
Filters need to be replaced when they reach the end of their useful life. UV lamps also need replacement because their output decreases over time.
UV Water Systems explains that UV lamps can fall below 70% of their original output after more than 10,000 hours, or approximately 12 to 18 months on average.
The quartz sleeve also needs regular cleaning, while the seals require attention.
Annual servicing helps keep the different parts of the system working as intended.
Choosing the Right Way to Reduce Chlorine
If chlorine taste or smell is the main concern with your home's mains water, activated carbon filtration is an important option to consider.
But the best setup depends on more than chlorine alone.
You also need to consider water flow, the size of your household, the water source and whether there are other contaminants that need to be addressed.
UV Water Systems offers filtration systems designed for different water sources and uses carbon filtration as one part of its wider treatment approach.
The goal is not to find one filter that claims to do everything. It is to use the right combination of treatment stages for the water entering your home.
Final Thoughts
If you notice a chlorine taste or smell in your mains water, you do not necessarily need a complicated solution.
Activated carbon filtration can reduce chlorine, along with helping improve taste and odour.
However, carbon filtration is only one part of a complete water treatment system. Sediment filtration helps remove particles, while UV treatment provides a separate sterilisation step where required.
UV Water Systems combines these technologies in its multi-stage systems, with the exact filtration setup depending on the water source and the needs of the property.
With the right filters, correct installation and regular maintenance, homeowners can take a more practical approach to managing the quality of the water used throughout the home.
Frequently Asked Questions
What is the best filter for removing chlorine from home water?
Activated carbon filtration is commonly used to reduce chlorine. UV Water Systems uses carbon filtration in systems designed for mains water and states that its carbon filters help remove chlorine, taste, smell and discolouration.
Does a UV water filter remove chlorine?
No. UV treatment and carbon filtration have different jobs. UV treatment is used to sterilise water, while activated carbon filtration is used to reduce chlorine, taste, odour and certain chemicals.
How often should a carbon water filter be replaced?
UV Water Systems states that its cartridges are tested to last around 9 to 12 months. Actual lifespan depends on water quality and household usage. Poor incoming water quality can cause filters to need replacement sooner.
Can one filter remove every contaminant from household water?
No. Different filtration methods address different water quality concerns. Sediment filters, carbon filters and UV treatment each have specific roles. The right combination depends on the home's water source and the contaminants present.
Does chlorine removal mean UV treatment is unnecessary?
Not necessarily. Chlorine reduction and UV treatment address different concerns. Carbon filtration can reduce chlorine, while UV treatment provides a separate sterilisation step for microorganisms. A combined system can therefore address more than one type of water quality concern.