GW1 Under Sink Water Filter


The Glacier GW1 under sink water filter is our flagship and most popular unit – an invaluable kitchen appliance which will completely transform your water for up to 3 years!

Plumbed inline under the sink, this 5 stage filter removes the chlorine, chemicals, pesticides, herbicides and heavy metals from your drinking water. This water filter is great for all the family as it improves the quality and taste of your drinking water, hot drinks and cooked vegetables. No more plastic bottles. Much more environmentally friendly.

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Key Features of the GW1 Under Sink Water Filter

  • Our flagship and most popular under sink water filter.
  • Environmentally friendly. No more plastic bottles.
  • High performance, up to 3 year system.
  • Installed directly on the water line to your kitchen tap.
  • Most suitable for 3+ person households.
  • Extensive 5 stage undersink water filter.


  • No need to have multiple different types of filters under the sink taking up space as our 5 stage water filter does it all.
  • Removes nasty odours and tastes caused by chlorine and other chemicals.
  • Filters out heavy metals including lead and mercury.
  • 5 unique stages of natural activated carbon, leaving behind the essential salts and minerals the body needs.
  • Produces approximately 40,000 litres of clean, fresh water (over 3 years). Want to do more? See our whole house water filter range.

     Using a Glacier GW1 water filter to eradicate any chlorine taste and contaminants.


  • Lasts up to 3 years completely maintenance free! Most under sink water filters only last for 6 months.
  • Your replacement has simple push, quick-connect fittings that allow a seamless replacement process.
  • Subscription free.
  • Much more cost effective and convenient than jug filters or bottled water.


  • Your Glacier GW1 under sink water filter can be plumbed through your normal kitchen tap or with a stylish tap that sits neatly alongside your sink. (For more details, see additional information).
  • All our water filter orders are dispatched with full DYI instructions.

Filtered Water For All the Family For Only 23p Per Day

Initial Cost


Replacement after 3 years


That is only

£80 per year

£6.66 per month

£1.66 per week

Clean, fresh, filtered water for only

£0.24 per day

Why the GW1 Inline Water Filter?


Using a Glacier GW1 inline under sink water filter encourages children and adults to drink fresh filtered water instead of surgery fizzy drinks, promoting optimal hydration and a healthier lifestyle. Plus, the best way to make sure your family is getting all the goodness from fruit and vegetables is to make sure they are washed and cooked in filtered water!

For more technical information, please download the PDF Specification for the GW1 Water Filter or click on additional information tab.

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