Countertop Reverse Osmosis Water Purifier for UK Homes

Other Water provides plug-and-go countertop reverse osmosis water purifiers designed for cleaner, better-tasting drinking water at home, in the office, or in rented spaces. No complex installation required.

We guarantee a lifetime warranty.

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Why Choose Other Water?

Other Water is built for customers who want cleaner, better-tasting drinking water with simple setup, smart design, and everyday convenience.

Plug-and-Go Setup

No complex installation or permanent plumbing changes required.

Ideal for UK Homes

Suitable for homes, offices, flats, and rented spaces.

Reverse Osmosis Filtration

Designed to support cleaner, better-tasting drinking water for daily use.

TDS1 Testing Support

Helps customers better understand their drinking water quality.

Featured Product

Nova 100 Countertop Reverse Osmosis Water Purifier

Nova 100 is Other Water’s plug-and-go countertop reverse osmosis water purifier, designed for UK homes, offices, flats, and rented spaces. It helps support cleaner, better-tasting drinking water without complex installation or permanent plumbing changes.

✓ Countertop reverse osmosis filtration
✓ No permanent plumbing required
✓ Suitable for UK homes, offices, and renters
✓ Includes TDS1 water quality testing support
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Nova 100 countertop reverse osmosis water purifier for UK homes

Free TDS1 Water Testing Support

Free TDS1 Water Quality Test Pen Included with Nova 100

The TDS1 Water Quality Test Pen helps customers measure Total Dissolved Solids in seconds and compare tap water with filtered water at home. It is included free with Nova 100 orders to support better understanding of everyday drinking water quality.

✓

Check TDS1 levels before and after filtration

✓

Simple readings for home water quality awareness

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Useful for monitoring drinking water quality changes over time

Get a Free TDS1 tester
TDS1 water quality test pen included with Nova 100

Test. Compare. Understand.

A practical tool for checking water quality at home and understanding the difference water filtration can make.

Why Water Quality Matters

What’s Really Inside Your Tap Water?

Tap water can contain chlorine, hard water minerals, and dissolved substances that may affect taste, smell, and everyday drinking quality. Other Water helps customers better understand their water quality with TDS1 testing support and countertop reverse osmosis filtration.

Chlorine & Taste

Chlorine is commonly used during water treatment and can affect the smell and taste of drinking water.

Hard Water Minerals

Minerals in hard water can contribute to scale buildup in kettles, appliances, and everyday kitchen use.

TDS1 Levels

Total Dissolved Solids can be checked with a TDS1 Water Quality Test Pen to better understand drinking water.

Most people never test their water. That is why Other Water includes TDS1 testing support with Nova 100, helping customers compare tap water and filtered water at home.

Water Purifiers, Filters & Testing Products

Explore Other Water’s range of countertop reverse osmosis water purifiers, replacement filters, and TDS1 water testing products designed for UK homes, offices, and renters.

Nova 100 Countertop Reverse Osmosis Water Purifier

Nova 100 Countertop Reverse Osmosis Water Purifier

Nova 100 is a plug-and-go countertop reverse osmosis water purifier designed for UK homes, offices, and renters. It helps support cleaner, better-tasting drinking water without complex installation.

£299.00 £199.00
View Nova 100
ROF2501 Reverse Osmosis Replacement Filter

ROF2501 Reverse Osmosis Replacement Filter

ROF2501 is a replacement reverse osmosis filter made for continued filtration performance. It helps keep your Nova 100 system working efficiently for everyday drinking water use.

£49.99
View ROF2501
TDS1 Water Quality Test Pen

TDS1 Water Quality Test Pen

The TDS1 Water Quality Test Pen helps measure Total Dissolved Solids in seconds, making it easier to compare tap water and filtered water at home.

£0.00
View TDS1

Our Purpose

Built Around Cleaner Everyday Drinking Water

Other Water is focused on simple, space-saving water purification solutions for UK homes, offices, and renters.

Our Vision

At Other Water, our vision is to make cleaner, better-tasting drinking water easier for everyday life. We focus on countertop reverse osmosis solutions that help customers better understand and improve their drinking water quality.

Explore Our Products

Our Mission

Our mission is to make advanced water purification practical for everyday use. Through Nova 100, ROF2501 replacement filters, and TDS1 water quality testing support, we help customers filter, test, and enjoy drinking water at home.

Shop Nova 100

Water Quality Guides

Water Purifier & UK Tap Water Guides

Read practical guides about UK tap water quality, countertop reverse osmosis filtration, TDS testing, replacement filters, and choosing the right water purifier for everyday drinking water.

How to Compare Countertop RO Water Purifiers in the UK

June 02, 2026

How to Compare Countertop RO Water Purifiers in the UK

A practical UK guide to comparing countertop reverse osmosis water purifiers by setup, kitchen space, filtration type, filter replacement, TDS test...

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London High Rise Flats: The Hidden Risks of Storage Tanks and a Plug and Go RO Fix

May 12, 2026

London High Rise Flats: The Hidden Risks of Storage Tanks and a Plug and Go RO Fix

London high‑rise flats often rely on building storage tanks that can introduce sediment, off‑tastes, and fluctuating TDS. A plug‑and‑go countertop ...

Read More
View All Blogs

Helpful Answers

Frequently Asked Questions

Answers to common questions about Nova 100, countertop reverse osmosis filtration, TDS1 water quality testing, UK tap water, and replacement filters.

What is a countertop reverse osmosis water purifier?

A countertop reverse osmosis water purifier is a water filtration system designed to sit on a kitchen counter instead of being installed under the sink. Nova 100 is designed to support cleaner, better-tasting drinking water through countertop reverse osmosis filtration.

  • Designed for everyday drinking water use
  • Useful for homes, offices, flats, and rented spaces
  • Does not require the same setup as many under-sink systems
Does Nova 100 need plumbing or permanent installation?

Nova 100 is designed as a plug-and-go countertop reverse osmosis water purifier. It does not require permanent plumbing changes, making it practical for customers who want a simpler setup.

  • No permanent pipework required
  • No complex under-sink installation
  • Suitable for daily countertop use
Is Nova 100 suitable for renters, flats, and small UK kitchens?

Yes. Nova 100 is suitable for many UK homes, flats, offices, and rented spaces because it is designed for countertop use and does not depend on permanent installation.

  • Good for renters who cannot change plumbing
  • Useful for compact kitchens and shared spaces
  • Easy to place on a countertop for regular use
What does the TDS1 Water Quality Test Pen measure?

The TDS1 Water Quality Test Pen helps measure Total Dissolved Solids in water. TDS readings can help customers compare tap water and filtered water at home.

  • Measures dissolved solids as a simple reading
  • Helps compare water before and after filtration
  • Supports better awareness of drinking water quality

A TDS1 reading does not identify every individual substance in water, but it is useful for basic water quality comparison.

Can I compare tap water and filtered water with TDS1?

Yes. TDS1 can be used to check TDS levels before and after filtration, helping customers better understand the difference between tap water and filtered water.

  • Test tap water first
  • Test filtered water after using Nova 100
  • Compare the readings to monitor water quality changes
Why does UK tap water taste different in different areas?

UK tap water taste can vary because of local water sources, treatment processes, chlorine, hard water minerals, and dissolved substances. These factors can affect taste, smell, and how water feels in everyday use.

  • Chlorine can affect taste and smell
  • Hard water minerals can affect kettle and appliance scale
  • Dissolved substances can vary by location
What is the difference between reverse osmosis and a water filter jug?

A water filter jug is usually a simple, portable filtration option. A countertop reverse osmosis water purifier is designed to provide a more advanced filtration approach for customers who want cleaner, better-tasting drinking water at home.

  • Filter jugs are simple and portable
  • Reverse osmosis filtration is a more advanced approach
  • Nova 100 is designed as a plug-and-go countertop solution
When should I replace the ROF2501 reverse osmosis filter?

Filter replacement depends on usage, water quality, and the product guidance provided with the system. The ROF2501 replacement reverse osmosis filter is designed to help maintain continued Nova 100 filtration performance.

  • Follow the product instructions for replacement guidance
  • Replace filters when recommended for best performance
  • Use TDS1 testing support to better understand changes in water quality