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General Questions
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.
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.
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.
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 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.
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.
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.
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.
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