A water filter for home use can make a noticeable difference to taste, smell, and, in some cases, water safety. With so many types on the market, though, it’s easy to end up choosing the wrong one for your household. This guide breaks down the main options and how to choose between them.
Why Homeowners Install a Water Filter
The most common reasons are improving taste, reducing limescale, and removing chlorine or sediment. In hard water areas particularly, a filter can noticeably improve both the taste of drinking water and the performance of kettles and appliances over time.
Main Types of Home Water Filters
- Jug filters – affordable and easy to use, though limited in capacity and filtration power
- Under-sink filters – fitted directly to the cold water line, offering filtered water on demand
- Whole-house filtration systems – filter water as it enters the property, covering every tap
- Reverse osmosis systems – provide the most thorough filtration, removing a wide range of contaminants
For a closer look at how reverse osmosis systems specifically work, see our reverse osmosis systems for the home guide.
What Do Home Water Filters Actually Remove?
Most filters target chlorine, sediment, and limescale-forming minerals. More advanced systems can also reduce heavy metals, pesticides, and certain bacteria, though the exact contaminants removed depend on the filter type and quality.
Whole-House Filtration Systems Explained
Unlike a single tap or jug filter, a whole-house system treats water as it enters your home, so every tap, shower, and appliance benefits. For a full breakdown of how these systems work and what installation involves, see our home water filtration systems guide.
Do You Need a Water Softener Too?
Filtration and softening solve different problems. A filter improves water quality and taste, while a softener specifically reduces limescale caused by hard water. In many hard water areas, homeowners use both. Our water softener guide covers whether one is worth adding to your home.
Installation and Maintenance
Jug and simple tap filters need no installation and just require regular cartridge changes. Under-sink and whole-house systems typically need professional installation, along with periodic filter replacement, usually every 3-12 months depending on the system and water usage.
How to Choose the Right Filter for Your Home
- Consider your local water hardness and any known quality issues
- Decide whether you need filtered water at one tap or throughout the home
- Factor in ongoing costs, such as replacement cartridges or membranes
- Check certification standards where water safety is a specific concern
Frequently Asked Questions
Do I really need a water filter in the UK?
UK tap water is generally safe to drink, so a filter is more about improving taste and reducing limescale than addressing safety concerns in most areas.
How often should I change a water filter?
This varies by system, but most jug filters need changing monthly, while under-sink and whole-house filters often last several months to a year.
Is a whole-house filter worth the cost?
For households with poor water quality or heavy limescale issues, many find the consistent, whole-home coverage worth the higher upfront cost.
