FAQ’s & Help

 

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General Questions
When should I change my Doulton Water Filter?

For a family of four, we recommend changing your filter every 6 months.

If you notice your water flow (the speed the water comes out of your tap) dropping before 6 months, remove your filter and clean it with a stiff brush. You can clean your filter as often as needed without damaging the performance. Find out how.

Are all ceramic water filters the same?

Absolutely not. Doulton Water Filters are the original ceramic filter manufacturers and a globally trusted brand. We have been updating our groundbreaking filter design since 1826. We are a UK ISO accredited company offering independently and regularly tested water filters. Certifications held with NSF, WRAS, Lucideon and many more.

 

Download our Filter Performance Table

What level of bacteria can my Doulton Water Filter cope with?

Our filter forms a physical barrier for pathogens, trapping the bacteria in your water on the surface of the ceramic while allowing clear, mineral-rich, great-tasting water though. The bacteria trapped on the surface is stifled with silver, added to our ceramic during manufacture.

If your water flow lessens before you change your filter, remove and clean it before putting it back to extend its life. Find out how here.

What causes hardness in water?

Hardness is caused by Calcium Carbonate or metal salts in your water. Hard water is perfectly safe to drink, but doesn't allow soaps to foam as freely as softer water (water with less Calcium Carbonate).

Why do Total Dissolved Solids increase when I use a Doulton Water Filter?

With a Doulton Water Filter, the healthy mineral content in your water will increase, leading to a slight increase in your water's Total Dissolved Solids.

Why does the PH of my drinking water increase when I use my ceramic filter?

With a Doulton Water Filter, the healthy mineral content in your water will increase, leading to a slight increase in your water's PH level.

Does Doulton manufacture the Berkey filter range including the Black Berkey filter element?

No. Doulton is not involved in the manufacture of Berkey filter elements or any other Berkey branded filter products.

How do I know when to change my filter?

On average a family of four uses approximately 8 litres of water per day for cooking and drinking. Therefore, based on 10 litres/day for four people the life of your filter can be estimated in time rather than capacity.

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Buying Advice
Is all Doulton plastic BPA free?

Yes, all Doulton and British Berkefeld plastic is BPA free, food-grade polypropylene.

We also offer Stainless Steel systems for anyone avoiding plastic use.

When I change my EcoFast® filter element, do I need to change the plastic housing and pipework too?

No, you won't need to change the filter housing - all you need to change is the ceramic filter inside the plastic housing. Find out how here.

Which replacement filter fits my EcoFast® water filter?

Our Ultracarb® or Ultracarb SI® is the perfect choice for your EcoFast® filter system.

 

Watch the video to discover how to replace your filter.

When I replace my water filter element in my Royal Doulton ELITE® will I need to change the housing too?

No, you won't need to change the filter housing - all you need to change is the ceramic filter inside the plastic housing. Find out how here.

Which replacement filter fits my Royal Doulton ELITE® water filter?
I bought my Doulton water filter at Ideal Home Show. Which replacement filter fits my Ideal Home Show EcoFast® water filter?

Our Ultracarb® or Ultracarb SI® is the perfect choice for your Ideal Home EcoFast® filter system.

When I replace my water filter element in my Ideal Home EcoFast®, will I need to change the housing too?

No, you won't need to change the filter housing - all you need to change is the ceramic filter inside the plastic housing. Find out how here.

When I replace my water filter and pre-filter cartridge in my HCP DUO Countertop or DUO Undercounter system, can I choose a different pre-filter from the one I had before?

Absolutely! When you change your HCP DUO Countertop or DUO Undercounter system filters you can also change the pre-filter you use.

 

Choose between filters that target Limescale, Chlorine, Fluoride, Sediment and Nitrate pollution.

When I replace my water filter and pre-filter cartridge in my HCP DUO Countertop or DUO Undercounter system, will I have to replace the housing?

No, when you replace your pre-filter cartridge and ceramic water filter you will only have to change the filters. You can keep the housing, pipe and tap fitment working as usual.

How big are the replacement filters for my GOgravity Portable Filter System, and what do they filter?

To filter bacteria, sediment, rust, particles, microplastics, heavy metals (including lead); pharmaceuticals, oestrogen and chlorine, the filter element is 7” (22cm) tall and 2” (5cm) wide, available here.

 

Or, to filter bacteria, sediment, particles, microplastics, heavy metals (including lead); pharmaceuticals, chlorine, oestrogen and fluoride, the filter is slightly wider at 7” (22cm) tall and 2.75” (7cm) wide, available here.

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Things We Filter
Will my filter element remove Arsenic?

Filtration does not remove Arsenic from water.

How effective is my filter element against Legionella bacteria?

The ceramic in our filters forms a physical barrier to bacteria, blocking its path while allowing clear, fresh water through. Our water filters are trusted worldwide to remove bacteria from drinking water by thousands of people. However, Legionella is capable of slow regrowth downstream of the filter so it's important to disinfect downstream of the filter where Legionella is suspected.

Does my filter element work against Nitrates?

Yes, our ON countertop and IN undercounter DUAL systems come with the option of a Nitrate specific pre-filter that filters Nitrates. Find out more here.

Does my filter element work against Oestrogen and Synthetic Oestrogen?

Yes, the activated carbon in our candles reduces Oestrogen and synthetic Oestrogen in drinking water.

Which minerals will my Doulton filter leave in my filtered water?

Your water's mineral content will depend on where you live. Doulton and British Berkefeld water filters will leave healthy minerals in your filtered water while filtering bacteria and pathogens. The best way to find out your individual water mineral content is to check with your local water provider. Your local water provider will be able to let you know.

Will my filter element remove Manganese?

Manganese will not be removed by a filter element.

Will my filter element remove Fluoride?

Yes, our ON countertop and IN undercounter DUAL systems come with the option of a Fluoride specific pre-filter that filters Fluoride. Find out more here.

 

Our GO gravity-fed systems can be used with our Ultra Fluoride ceramic candle that filters Fluoride. Find out more here.

Does my filter element remove Chloramine?

Our ceramic filters take out chlorine and monochloramine, improving the taste and odour of drinking water.

Does my filter element remove Aluminium?

Our ceramic filters remove aluminium in particulate form. >99.99% will be removed at 0.9 micron or >99.99% at 0.5 to 0.8 micron. Filtration is not suitable for dissolved aluminium.

Does my filter element work with hardness?

Yes, our ON countertop and IN undercounter DUAL systems come with the option of a Limescale specific pre-filter that filters Limescale. Find out more here.

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Water Filter Care
How do I clean a ceramic filter candle?

We recommend a gentle, evenly applied buffing with a scouring pad until the whiteness of the ceramic returns.

Rubber gloves are recommended to be used during cleaning and NEVER use soap or detergents.

Ensure that the end of the plastic mount does not come into contact with unfiltered water.

See how to clean your filter.

How do I know when my ceramic filter element needs cleaning?

When your water flow (the speed water comes out of your tap) lessens, it might be time to clean your water filter. Find out how here.

Why is my ceramic filter element discoloured?

This is great news - your filter element is working! All that discolouration has been trapped on the filter's surface and is safely removed from your drinking water.

My ceramic filter seems to block up regularly; is it working correctly?

Absolutely, this means that your ceramic filter is trapping dirt and bacteria that would otherwise be in your drinking water. If you find your filter blocking too often, look at using our DUAL systems with a Sediment pre-filter that will help stop the blockages. Find out more here.

Do I need to sterilise the candle after cleaning?

No, there is no need to sterilise the ceramic candle. All our filters have bacteria inhibiting features built in.

How do I keep the inside of my filter housing clean?

The filter housing is best cleaned by unscrewing the body from the head and wiping the surface and the inside of the body with a soft cloth dampened with warm water. Do this when you change your water filter.

What happens if I leave the filter unused for a period of time?

If normal use of the filter is interrupted by holidays or vacations, you may notice a ‘flat’ or ‘stale’ taste. To clear this, simply run the filter tap for five minutes.

Will hardness affect the performance of an Ultracarb filter element?

No.

Why has my water flow lowered?

Your filter may need a clean between changes. Find out how to clean your filter here.

Can I recycle my old ceramic filter?

You can recycle the plastic mount and compost the old filter element or use it to help with drainage in the bottom of your plant pots.


We suggest safely removing the mount using light pressure with a hammer to break it from the filter element. Next, cover the ceramic with an old rag and gently break it into small pieces, again using light pressure with a hammer. Find out more here.

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