What does the ceramic filter remove?

This filter reduces up to 99,9% of a broad range of substances commonly found in drinking water, such as microplastics, fluoride, hormones, PFAS and heavy metals. Click below to find the full list of contaminants removed.

Contaminants removed

Does the filter remove beneficial minerals?

Improves water quality and taste, while preserving natural minerals, like calcium, magnesium, and potassium.

Do I need to remineralise the water?

Because our water filters maintain essential minerals, there is no need to remineralise the water.

However, should you still like to add mineral stones or drops to your water this is perfectly fine and will not affect the efficacy of the filtration process.

Do your filters alkalise the water?

Our ceramic water filters are designed to effectively remove impurities, improve taste, and provide clean, fresh drinking water. However, they do not specifically alkalise water or significantly alter its pH level.

If you want to increase your water’s alkalinity, you may want to consider additional alkalising solutions, such as mineral cartridges or natural methods like adding alkaline minerals.

How does the ceramic water filter work?

This water filter works with a simple gravity-fed drip system. Water is poured into the upper chamber and slowly filtered through a ceramic filter element into the lower chamber.

How much water does it hold?

12 litres, 6 litre in the top chamber and 6 litre in the lower chamber.

How long does it take to filter water?

It takes about 1 to 2 liters per hour to filter water.

How do I care for my filter?

The flow of water may slow over time — this is a natural result of the filter doing its work.

To restore flow, remove the filter and gently clean the surface with a clean, soft brush under cool water. Do not use soap or detergent. The filter does not need to be reset after cleaning.

Check the filter regularly for build-up to ensure consistent performance.

Avoid exposure to temperatures below 4°C, as this may damage the filter.

What is the capacity of the filter candle?

Each filter element has a capacity to purify up to 2460 litres.

When should I replace my filter candle?

Replacement timing will depend on the quality of the local water conditions and frequency of use. Under average conditions and if cleaned regularly, your filter will provide filtration for 6 to 12 months or 2460 litres. After this stage, the activated carbon becomes too saturated and will no longer function optimally.

Are there other filter candles compatible with Claii water filters ?

There are many other filter candles that are compatible with our vessels. Feel free to contact us about this matter.

Is each ceramic filter unique?

Yes. Each claii ceramic water filter is individually handcrafted, which means no two pieces are exactly alike. Subtle variations in shape, texture, and glaze are a natural part of the ceramic-making process and reflect the character of handmade craftsmanship. These small differences are what make each filter truly one of a kind.

What if a part of the ceramic vessel breaks?

Should an accident happen, we offer replacement parts so you don't need to replace the entire filter system. If you need a replacement part, please contact us at info@claiistudio.com

Is the ceramic food-safe?

Yes. All claii ceramic vessels are made using food-safe materials and glazes suitable for contact with drinking water. Every component that comes into contact with water is carefully selected to meet safety standards, so you can enjoy filtered water with confidence.

Where is the ceramic filter made?

Each water filter is handcrafted in Portugal in a small, family-run factory, that has been passed down through five generations.

Claii is here to celebrate traditional craftsmanship and natural materials. We believe everyday objects should be both beautiful and functional, bringing a sense of calm and intention to your daily rituals.

As our production grows, we remain committed to working with trusted ceramic makers who share our values of quality, craftsmanship, and thoughtful design.

Water Leaking

99% of the time leaking from the vessel is a sign that your tap needs to be tightened. You will need to empty the vessel and holding the nut on the inside tighten the tap by at least one full turn clockwise until it is watertight.

If there is water dripping from the spout of the tap within 72 hours of delivery, please us via email at info@claiistudio.com to arrange for a replacement part to be sent to you.

Abnormal taste

Often described as fishy, chalky or chemically, the funny taste sometimes experienced with a brand-new filter candle is a result of the initial degasification process of the media inside the ceramic filter candle. After being flushed properly, this taste will dissipate. This process is usually quite quick but can take up to a few days.

How much are shipping costs?

We offer free shipping to selected European countries, on all orders over 200 euro. You can find the full list of eligible countries on our Shipping Policy page.

Please refer to our Shipping and Delivery page for further details.

Do you ship internationally?

Yes, we ship internationally.

For all other destinations, shipping costs are calculated automatically at checkout based on your location and the size of your order.

If you have any questions about shipping to your country, please feel free to contact us before placing your order.

How long does shipping take?

Once your order has been dispatched, estimated shipping times are typically:

• Europe: 3–10 business days
  
• International: 7–21 business days
  

You will receive a tracking number as soon as your order ships.

What if my ceramic filter arrives damaged?

We take great care in packaging every order, but in the rare event that your filter arrives damaged, please contact us within 72 hours of delivery and include photos of the damage and packaging.

We will work with you to find the best solution as quickly as possible, whether that means sending a replacement part or replacing the damaged item. Your satisfaction is important to us, and we want you to enjoy your claii filter for years to come.

Can I return my order?

Due to the fragile and handmade nature of our products, we encourage a considered purchase. Please take the time to ensure your waiter filter will find a place in your home forever, as we do not offer refunds, returns or exchanges for change of mind.

Does Claii offer exchanges?

All sales are final. Once your order has been delivered, it cannot be returned or exchanged.

Can I modify or cancel my order?

Please contact info@claiistudio.com as soon as possible if you wish to modify your order. Depending on whether your order has been dispatched, we are happy to modify any orders that have not yet been processed.