How to Filter Water After Chlorination
A good question to ask is how to filter chlorine from water.
Chlorination can be a very effective treatment method for bacteria and odors, and a good pre-treatment for filtering iron and manganese particles. However, chloramines are used alongside chlorine in municipal water treatment to kill microorganisms effectively, highlighting their stability. The process can cause users problems in septic tanks, as the chlorine kills the bacteria in the tank and causes the system to back up.
Besides septic tank users, many people are turned off by the idea of bathing in and drinking chlorinated water. Chlorine levels in drinking water, when maintained at or below 4 parts per million (ppm), are considered safe for consumption according to regulatory agencies like the EPA and CDC.
Fortunately, there are several good methods to filter chlorine from water. Filtration systems can effectively remove chlorine taste and odor, providing clean and healthy drinking water. Chlorine interacts with other components in water, forming by-products that can have negative health effects. It can be as easy as installing a carbon filter after your chlorinator.
Introduction to Water Filtration
Water filtration is the process of removing contaminants and impurities from water to make it safe for drinking, cooking, and other uses. With the increasing presence of pollutants in tap water, using a water filter to remove chlorine, lead, and other contaminants has become essential. Activated carbon filters and reverse osmosis systems are popular options for removing chlorine and other impurities from water.
Activated carbon filters work by adsorbing contaminants onto the surface of the carbon, effectively removing chlorine and improving the water's taste and odor. Reverse osmosis systems, on the other hand, use a semi-permeable membrane to filter out most contaminants, including chlorine, lead, and other harmful substances.
A whole-house system is an excellent choice for those looking to provide filtered water to the entire home. These systems are installed at the point where water enters the house, ensuring that every tap delivers clean, filtered water.
Additionally, a shower filter can be installed to remove chlorine and other chemicals from the water used for bathing, protecting your skin and hair from the drying effects of chlorine. Whether you choose a whole house system, a reverse osmosis system, or a shower filter, investing in a quality water filter is crucial in ensuring your tap water's safety and quality.
Understanding Water Contaminants
Tap water can contain a wide range of contaminants that may affect both your health and the taste of your drinking water. Chlorine, a chemical element commonly used in municipal water treatment, is added to kill bacteria and other harmful microorganisms. However, while chlorine is effective for disinfection, it can leave behind an unpleasant taste and odor in your water. In addition to chlorine, tap water may also contain other contaminants such as lead, chemicals, and organic compounds that can impact water quality.
Activated carbon filters are a popular choice for removing chlorine and other contaminants from drinking water. These filters work by adsorbing chlorine and other substances, significantly improving the taste and odor of your water. Regularly testing your water quality is important to identify the presence of contaminants and to determine the most effective filtration method for your needs. By understanding what’s in your tap water, you can take the right steps to ensure your drinking water is clean, safe, and free from unpleasant tastes and odors.
How to Filter Chlorine from Water?
There are three primary chlorine/chloramine removal methods in water treatment. All filtration systems use activated carbon to effectively remove chlorine tastes and odors.
Filtering water from specific fixtures like the kitchen faucet is important for home health and cleanliness.
- Carbon Cartridge Filter Systems
- Carbon Upflow Non-Backwashing Systems
- Carbon Automatic Backwash Systems
Advanced reverse osmosis systems can also remove fluoride along with other harmful contaminants.
Ceramic filters can remove various contaminants, including chlorine and industrial solvents.
The installation process of different water filtration systems varies, with some being simple to install, like shower filters, while others, such as whole-house filtration systems, may require professional installation.
Filter Components
A good water filter uses multiple parts to target different contaminants. The carbon filter is the core, removing chlorine, lead, and other harmful substances while improving taste.
Many systems also include a sediment filter to catch larger particles before they reach the main filter. For advanced purification, reverse osmosis systems can remove up to 99% of contaminants, including heavy metals and chemicals. Knowing how each part works helps you choose the right system for cleaner, safer water.
Carbon Cartridge Filter Systems
Pros: It is easy to install and requires no electricity. Cartridges can be changed easily, different types of filter cartridges can be used, and upfront costs are lower. Chlorine is used in municipal water treatment to kill bacteria and other harmful microorganisms.
Cons: Not the best for well water systems. It may restrict flow rate and pressure in-home, is not suitable for large homes or high water use, and has a higher cost due to frequent filter cartridge changes. The cartridge can become fouled, and bacteria can grow on the cartridge. Chlorinated water flows through household pipes, which can lead to potential issues such as sediment and scale build-up that can damage pipes and appliances.
Filter cartridges are the least expensive method of chlorine removal initially; however, over time, their upkeep will become more costly than that of a backwash or upflow carbon filter, as you’ll have to replace the filter cartridge regularly to keep the filter working properly. Pre-filters in these systems can effectively remove sand and other solid particles.
We often recommend Big Blue radial carbon filters for homeowners looking to filter their chlorine water with a cartridge filter. They are relatively inexpensive, offer great flow rates, and are very effective filters. These systems also prevent the accumulation of sediments and other contaminants, ensuring cleaner and healthier drinking water.
Additionally, these filters can improve the smell of water by removing chlorine and other impurities.
Chloramine Water Filtration: Carbon Up-Flow Non-Backwashing Systems
Pros: No drain is required, no backwash or wastewater, it is suitable for higher flow rates and larger homes, and it has lower costs due to much less expensive bulk carbon used instead of filter cartridges. Chlorine and chloramines are effective in eliminating harmful microorganisms, including viruses.
Cons: The Media can get fouled if sediment is present; it is best when used with a prefilter. If chlorine levels are low and Chlorine Water Filtration is not used daily, tastes and odors can develop. Water filters effectively remove chlorine and improve water quality, ensuring safer drinking water.
With this type of system, water flows down a center distributor tube and up through the carbon. Carbon upflow non-backwashing methods are preferred for removing toxic chemicals (not usually found in treated municipal water) such as pesticides and herbicides.
Understanding the characteristics of both public and private water supply systems is crucial for assessing water quality and the effectiveness of treatment methods.
Whole-house filters provide purified water throughout the home, enhancing taste and being gentler on skin and hair than other filtering options.
Carbon Automatic Backwash Systems
Pros: Less pressure drop, better flow, and longer media life. The weekly backwash and rinse keep the carbon filter clean and free of sediment by stirring up the granular media and flushing out residue.
Cons: Requires a drain connection (though backwash water can sometimes be used for watering plants). Upfront costs are higher than upflow or cartridge filters.
A backwashing carbon filter installed on your main water line removes chlorine, sediment, rust, and odors from city water.
In downflow mode, water flows from the top through the media; during backwash, flow reverses to clean the media.
This filter effectively removes chlorine and associated tastes and smells, while flushing out trapped sediment and rust during backwash.
Backwash cycles are automatic, requiring minimal maintenance—media replacement is needed every 4 to 5 years.
Carbon’s high absorption rate makes it effective for removing chlorine. For a low-cost, low-maintenance option, consider a carbon backwash filter like the 5900-BT model using coconut shell-activated carbon.
This system also filters hydrogen peroxide, hydrogen sulfide, and odors common in well water.
It features an automatic backwashing valve that meters water usage and initiates backwash as needed, backed by a strong warranty: 7 years on the control valve and 10 years on the tank.
See the diagram below illustrating how a simple carbon filter removes chlorine from water.
Benefits of Filtration
Using a water filter offers a range of benefits for your entire home and family. One of the most noticeable advantages is the improved taste and odor of your drinking water, as filters effectively remove chlorine and other contaminants that can cause unpleasant flavors. A whole-house filtration system ensures that every tap in your home delivers clean, fresh-tasting water, while a shower filter can help protect your skin and hair from the drying effects of chlorine and other chemicals.
Filtration also reduces your exposure to harmful substances like lead and other contaminants, lowering the risk of waterborne illnesses and supporting better overall health. By choosing a water filter certified by the Water Quality Association, you can trust that your system will effectively remove chlorine and other impurities. Additionally, using a water filter helps reduce your carbon footprint by minimizing the need for bottled water, making it an environmentally friendly choice for your household.
Maintenance and Replacement of Filters
To keep your filter performing well, maintain it regularly and replace elements on time. How often you change filters depends on your system type and water usage—pitcher and under-sink filters may need replacing every few months, while whole-house systems last longer but still need periodic checks.
Watch for reduced water pressure or flow, which can signal a clogged filter. Follow the manufacturer’s maintenance guidelines to ensure clean, safe water and protect your system over time.
Conclusion
Removing chlorine and other contaminants from your water is essential for better health and quality of life. By learning about common contaminants, filter components, and the benefits of filtration, you can choose the right system for your needs. Regular maintenance and timely filter changes keep your water clean and safe.
Whether you use a whole-house system, a shower filter, or a pitcher, you’ll gain peace of mind knowing your water is free from harmful substances. Take control of your water quality and give your family clean, great-tasting water every day.
See the diagram below for an illustration of how to filter chlorine from water with a simple carbon filter. This is installed in conjunction with a chlorination system:
Frequently Asked Questions (FAQs)
1. How do you get chloramine out of water?
Chloramine can be removed using catalytic carbon filtration systems, which are more effective than standard activated carbon. Reverse osmosis and chemical neutralization methods like ascorbic acid (vitamin C) can also be used.
2. How to take chloramine out of water?
To remove chloramine at home, use a whole-house catalytic carbon filter or a point-of-use filter certified for chloramine reduction. Boiling or standard carbon filters are not effective against chloramine.
3. How to remove chloramine from tap water naturally?
Natural methods like using vitamin C (ascorbic acid) can neutralize chloramine in small quantities, such as in bath water. However, for drinking water, a certified filtration system is more reliable.
4. How to remove chloramine from water for fish?
Use a dechlorinator or water conditioner specifically labeled for chloramine removal. Simply letting the water sit won’t remove chloramine, which is more stable than chlorine.
5. How long does chloramine stay in water?
Chloramine is more stable than chlorine and can persist in water for days unless actively removed. It doesn’t dissipate easily and requires specific filtration or neutralization methods.
6. Does chloramine evaporate from water?
Unlike chlorine, chloramine does not easily evaporate. Letting water sit out will not effectively remove it, making filtration the preferred method for chloramine removal.
