Overview | Is this right for me? | What it reduces | How it works | Specs | What's included | Installation | Maintenance & costs | FAQs | Reviews

• Home Water Purification - the ultimate guide to water purification.
• How to Remove PFAS in UK Drinking Water - an in-depth article about forever chemicals and how to reduce your exposure.

Overview

The Moby mains water filter is a high performance filtration system designed to dramatically improve the taste, smell, and overall quality of your mains water. An ideal choice if you want filtered water directly from your existing kitchen tap. 

• Noticeably better tasting water after the removal of chlorine and chemicals.
• Choose a 5 micron carbon block cartridge or upgrade to a high-capacity cartridge for enhanced chlorine and PFAS / forever chemicals reduction.
• No extra tap required as it connects directly to the cold water feed of your kitchen tap.
• Compact but powerful: requires a minimum space of H 38cm x W 30cm x D 18cm. 
• Flexible installation: can be installed under the sink or anywhere suitable on the cold mains supply.

Do you ever wonder what's in your tap water - Learn about the most common types of drinking water contaminants.

Is this right for me?

Choose this if

You want great tasting, chlorine free water straight from your existing kitchen tap; with powerful filtration for chemicals, PFAS, sediment, and microplastics without installing a separate filter tap.

Not ideal if

You're looking to filter water throughout your entire home, as this system is designed for a single cold water supply rather than whole house filtration.

What to check before buying

• Available space: ensure you have at least H 38cm x W 30cm x D 18cm available where the filter will be installed.
• Installation point: confirm you want filtration on the cold water supply only (typically to the kitchen tap) and not a whole house system.
• Pipe size: check whether your plumbing uses 15mm (1/2") or 22mm (3/4") connections so the correct ports are supplied.
• Filtration needs: decide whether the standard 5 micron carbon block is sufficient, or if you want the upgraded option for longer life, better chlorine reduction, and improved PFAS and VOC removal.

Is tap water safe to drink? - Yes, but it doesn't mean you have to like it. Take your very own water journey to answer this question for yourself.

What it reduces and what it doesn't 

The Cold Water Tap Filter Moby reduces:

• Chlorine - to improve taste and smell
• Chemicals
• PFAS
• Microplastics
• Sediment

The Cold Water Tap Filter Moby doesn't reduce:

• Bacteria - unless you opt for the cartridge upgrade, but it won't be all of them.
• Micro-organisms - unless you opt for the cartridge upgrade, but it won't be all of them.
• Fluoride
• Some heavy metals (it may remove up to 50% of lead)
• Limescale
• Other dissolved contaminants such as chromium, iodine, silica, viruses.

How it works

Activated carbon filters, like those in the cold water tap filter Moby, use porous carbon to trap impurities as water flows through, effectively removing contaminants. Activated carbon is a renewable and eco-friendly material.

Specifications

Construction	100% coconut shell activated carbon
Rated flow	Maximum 10 lpm
Working temperature	4-52ºC (40-125ºF)
Working pressure	1.38 - 17 bar (20-250 psi)
Working conditions	Indoor residential use only
Size	4.5" x 10"
Connection size	15 mm (½") or 22 mm (¾") connections
Contaminants reduced (depending on local water chemistry)	PFAS, chlorine, chloramine, sand, rust, sediment, chemicals, microplastics
Micron rating (nominal)	5
pH	6.5 - 8.5
Chlorine reduction capacity*	> 90% reduction in chlorine at 2 ppm
PFAS reduction*	> 95% reduction in PFAS at 1500 ppt
Chloramine*	> 83% reduction in chloramine at 3 ppm
Filtration capacity - over the cartridges lifetime	Chlorine - > 136,500 litres @ 11.4 lpm PFAS - > 36,900 litres @ 5.6 lpm Chloramine - > 11,400 litres @ 5.6 lpm
Pressure drop	approx 0.28 bar
Maintenance	Cartridge change every 12 months. When installing a new cartridge flush for 1-2 minutes to remove carbon fines.

*Dependent on local water chemistry, flow rates, system design and application. Performance claims apply to a fully installed system with filter, housing, and connection to pressurised water.

Specifications - 1 micron carbon block

Construction	100% bituminous activated carbon (choose this cartridge if you suffer any allergic reactions to coconut)
Rated flow	Maximum 10 lpm
Working temperature	4-52ºC (40-125ºF)
Working pressure	1.38 - 17 bar (20-250 psi)
Working conditions	Indoor residential use only
Size	4.5" x 10"
Connection size	15 mm (½") or 22 mm (¾") connections
Contaminants reduced (depending on local water chemistry)	PFAS, chlorine, chloramine, sand, rust, sediment, chemicals, microplastics
Micron rating (nominal)	1
pH	6.5 - 8.5
Chlorine reduction capacity*	> 90% reduction in chlorine at 2 ppm
PFAS reduction*	> 95% reduction in PFAS at 1500 ppt
Chloramine*	> 83% reduction in chloramine at 3 ppm
VOC*	> 95% reduction of VOC
Filtration capacity - over it's lifetime this cartridge can filter out a greater quantity of contaminants than the 5 micron.	Chlorine - > 456,500 litres @ 11.4 lpm PFAS - > 39,700 litres @ 5.6 lpm Chloramine - > 22,800 litres @ 5.6 lpm VOC - > 8,500 litres @ 5.6 lpm
Pressure drop	approx 0.48 bar
Maintenance	Cartridge change every 12 months. When installing a new cartridge flush for 1-2 minutes to remove carbon fines.

*Dependent on local water chemistry, flow rates, system design and application. Performance claims apply to a fully installed system with filter, housing, and connection to pressurised water.

What's included

• Blue filter housing
• White mounting bracket
• 15 mm (½") or 22 mm (¾") connections 
• Isolating flexis
• Double check valve
• Housing spanner
• Either a 1 or 5 micron carbon block cartridge
• Printed installation instructions

Installation & placement

Install the cold water tap filter Moby on the cold feed to your kitchen tap. This filter is not a whole house filter unless it is a single person / one bathroom property.

To change cartridges, simply follow these instructions.

Ideally, a qualified plumber or handy person should handle installation.

Maintenance & running costs

It's important to replace the 5 micron or 1 micron carbon block cartridge every 12 months. Doing this will maintain effective chlorine, taste and odour removal.

FAQs

What does the Cold Water Tap Filter Moby remove from tap water?

The cold water tap filter Moby is designed to significantly improve the quality of your mains drinking water. It helps reduce chlorine, chemicals, PFAS, sediment, and microplastics. This results in cleaner, better tasting water directly from your kitchen tap, making it ideal for everyday drinking and cooking.

Can the Moby water filter be installed without a separate tap?

Yes, the Moby cold water tap filter system connects directly to your existing cold water supply, meaning you can enjoy filtered water straight from your standard kitchen tap. There’s no need to install an additional dedicated filter tap, making it a convenient and space-saving solution for modern kitchens.

What’s included in the cold water tap filter Moby kit?

The Moby water filter kit comes complete with everything needed for installation, including a high-capacity filter housing, activated carbon block cartridge, mounting bracket, flexible hoses, connection fittings for different pipe sizes, a double check valve, and a housing spanner. This all-in-one system is designed for easy setup and long-lasting performance.

* Watts components are sometimes replaced with other similar quality items due to supply chain issues. Brassware and other plumbing accessories are sourced from UK suppliers.

Reviews

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