Chloramine can leave otherwise clear mains water tasting medicinal, smelling unpleasant and feeling less appealing to drink. If you are researching how to remove chloramine from water, the key is choosing filtration designed for chloramine specifically – not simply buying the first filter that promises to improve taste.

Unlike chlorine, chloramine is deliberately stable. That makes it useful to water suppliers as a long-lasting disinfectant, but it also makes it harder to reduce at the kitchen tap. The right system can make a meaningful difference to your drinking water, cooking water and, in some homes, shower water.

What is chloramine and why is it harder to filter?

Chloramine is usually formed when chlorine and ammonia are combined during water treatment. Many Australian water authorities use it because it can remain active in long distribution pipes, helping protect water quality on its journey to homes and workplaces.

The trade-off is that chloramine does not dissipate as readily as free chlorine. Leaving a jug of water on the bench, refrigerating it or briefly boiling it will not reliably remove it. Ordinary granular activated carbon can also struggle where the filter is too small, water runs through too quickly, or the carbon is not suited to chloramine reduction.

For households, this matters most when water has a noticeable chemical taste or odour, when family members are particularly sensitive to taste, or when you want a more complete drinking-water solution that also addresses other contaminants of concern.

How to remove chloramine from water effectively

The most practical approach is filtration that gives water sufficient contact time with appropriate carbon media. Catalytic carbon is widely regarded as a stronger option for chloramine reduction than standard activated carbon because its surface helps break down chloramine more effectively.

A high-quality carbon block can also perform well when it is specifically rated for chloramine, correctly sized and operated within its stated flow rate. This last point is easy to overlook. Even excellent media cannot perform as intended if water is pushed through it faster than the cartridge was designed to handle.

For the broadest level of treatment, a reverse osmosis system with suitable carbon pre-filtration is often an excellent choice. The carbon stages reduce disinfectants before water reaches the membrane, while the reverse osmosis membrane helps reduce a wide range of dissolved contaminants. Depending on the system, this may include heavy metals, fluoride, salts and other unwanted substances alongside chloramine treatment.

Choose catalytic carbon for targeted chloramine reduction

An under-sink system using catalytic carbon is a strong choice if your main concern is chloramine taste and odour at the drinking-water tap. These systems are installed beneath the sink and deliver filtered water through a dedicated tap or a compatible three-way mixer tap.

The advantages are straightforward: high filtration capacity, a tidy installation and convenient access to filtered water for drinking, tea, coffee and cooking. A system with a larger cartridge housing generally provides more media and longer contact time than a compact tap-mounted filter, though it will need adequate cupboard space.

Look beyond broad claims such as “chlorine reduction”. Check whether the cartridge manufacturer specifically states chloramine reduction, the rated capacity, recommended flow rate and replacement interval. Chlorine and chloramine are related, but they are not interchangeable performance claims.

Consider reverse osmosis for more comprehensive filtration

Reverse osmosis is well suited to households that want to address chloramine as part of a wider water-quality plan. It is particularly worth considering where taste, fluoride, dissolved minerals or other contaminants are also on your list.

A reverse osmosis unit produces a slower filtered-water flow than a standard carbon filter because it processes and stores water before use. It also sends some water to drain during operation, with the exact amount depending on the unit, incoming pressure and system design. For many families, the trade-off is worthwhile for high-quality drinking water at a dedicated tap.

Choose a system with quality pre-filters and replace them on schedule. Chloramine can damage a reverse osmosis membrane if carbon pre-filtration is exhausted, so maintenance is central to both water quality and membrane life.

Use a whole-house system when the issue extends beyond drinking water

A whole-house filtration system treats water as it enters the property, providing filtered water to kitchen taps, bathrooms, laundry and appliances. It can be a sensible option for larger households, homes with multiple bathrooms or people who want to reduce chloramine exposure in shower and bath water as well as drinking water.

However, whole-house chloramine reduction needs careful sizing. Household flow rates can be much higher than the flow through a drinking-water filter. A small cartridge may reduce performance when several taps, showers or appliances are running at once. Larger housings, suitable media volume and correct plumbing design are essential.

For shower water alone, choose a shower filter that specifically identifies chloramine reduction. Heat and high flow make shower filtration more demanding, so a standard shower filter designed only for chlorine may not deliver the result you expect.

What will not reliably remove chloramine?

Several common approaches can improve water’s appearance or taste without providing dependable chloramine reduction. Understanding the limits helps avoid spending money on the wrong solution.

Boiling is not a reliable household method. Chloramine is more stable than chlorine, and boiling water may concentrate other dissolved substances as water evaporates. Letting water stand in an open jug is similarly unreliable, particularly for the short time most people are willing to wait.

UV treatment is valuable for controlling microbiological risks in appropriate applications, but it does not remove chloramine. Water softeners address hardness minerals such as calcium and magnesium, not disinfectants. Basic sediment filters trap particles like rust and dirt but do not remove dissolved chloramine.

Some jug filters may reduce chloramine, but only when the manufacturer explicitly makes that claim and the cartridge is changed as directed. Their smaller media volume and variable flow conditions mean they are usually better suited to modest drinking-water use than treating all household water.

Water distillers can produce very low-mineral water, but the outcome for volatile compounds depends on the design and whether the unit includes suitable post-treatment carbon. If chloramine reduction is your priority, a purpose-designed catalytic carbon or reverse osmosis system is generally the clearer choice.

How to choose the right system for your home

Start with where you want filtered water. For drinking and cooking only, an under-sink catalytic carbon system or reverse osmosis unit offers excellent value and convenience. Renters or people with limited kitchen space may prefer a benchtop solution, provided its chloramine performance is clearly specified.

If the whole family notices chloramine during showers, or you want to protect multiple water outlets and appliances, investigate a properly sized whole-house system. The purchase cost and installation requirements are higher, but so is the coverage.

Your local water supply also matters. Water quality can vary between metropolitan networks, regional towns and properties using rainwater, bore water or mixed supplies. A water test can help identify issues beyond chloramine, while your local water authority’s report can confirm the disinfectant used in your area.

When comparing products, focus on four practical details: verified chloramine claims, cartridge capacity, flow rate and ongoing replacement cost. A cheaper system is not necessarily better value if replacement cartridges are difficult to source or need changing far more often than expected.

Maintenance keeps chloramine filtration working

A filter only performs as well as its cartridge condition allows. Carbon media gradually becomes exhausted, and once it has reached capacity it can no longer reduce chloramine effectively. Water may begin to taste or smell more chemical again, although changes are not always obvious.

Replace cartridges according to the manufacturer’s time and litre rating, whichever comes first. A household with heavy water use may reach the litre limit well before the calendar interval. Keep a note of installation dates, or choose a supplier that can provide filter replacement reminders.

If you install reverse osmosis, do not delay pre-filter changes. This protects the membrane and helps maintain the system’s overall filtration performance. For whole-house systems, factor in access for servicing, cartridge changes and any plumber-required installation from the outset.

Online Water Filters can help match a chloramine-rated system to your water source, household size, space and budget, including practical options for kitchens, showers and whole-home treatment.

Cleaner-tasting water should not require guesswork. Choose a system built for chloramine, maintain it properly, and you can enjoy greater confidence every time you fill a glass, boil the kettle or prepare a family meal.