Clean Air, Clean Water: How to Improve Both in Your Home - Breathing Space

Most of the attention in home health circles goes to air quality. Mould spores, pollen, pet dander, VOCs these get talked about. What gets less attention is the water coming out of the tap.

Both matter. And in most UK homes, both could be better.

This guide covers the practical steps you can take on each front, without overcomplicating it.

Why Air Quality Still Deserves Attention

The EEA published its Air Quality Status in Europe 2026 report this year, and the findings were not comfortable reading. Out of more than 2,200 monitoring stations across Europe, only 166 recorded PM2.5 levels below WHO guidelines. That is roughly 7%. More than nine in ten urban Europeans are breathing air the WHO considers unsafe, and the UK is no exception to the broader trend.

Outdoors, there is a limit to what you can control. Indoors, there is quite a lot you can do.

The sources of indoor air pollution are well documented: dust mite particles, pet dander, mould spores, pollen that drifts in through windows and on clothing, VOCs from cleaning products and new furnishings, and fine particulate matter from cooking. In homes that lack adequate ventilation, which describes much of the UK housing stock, these build up over time.

A HEPA air purifier addresses this directly. It draws room air through a filter rated to capture particles down to 0.1 to 0.3 microns, removing the things that cause problems for allergy and asthma sufferers in particular. For most homes, a quality HEPA purifier running in the bedroom overnight makes a measurable difference. For those with more serious health needs, medical-grade options exist.

Why Water Quality Is Worth Thinking About Too

UK tap water meets legal standards. That is not in doubt. But meeting legal standards and being free of everything you might want to remove are two different things.

UK tap water typically contains low levels of chlorine and chloramine, used in the treatment process. Depending on where you live, you may also have harder water with higher mineral content, or trace levels of compounds that enter the supply through ageing pipe infrastructure. None of this is cause for alarm, but it does explain why a lot of people find filtered water tastes noticeably better.

The more substantive argument for home filtration is about what accumulates over time. Tap water in many areas contains microplastics, residual pharmaceutical compounds, and agricultural runoff at low concentrations. The science on long-term exposure to these at trace levels is still developing, but the direction of travel in research and regulation suggests the picture is not entirely straightforward.

Reverse osmosis is the most thorough filtration method available for home use. The Tappwater Countertop RO SMR removes over 100 different contaminants, including microplastics, chlorine, heavy metals, and pharmaceutical residues. It sits on the worktop, requires no installation, and produces clean water on demand.

For something simpler, the Tappwater PitcherPro SMR is a filtered jug that removes over 60 contaminants. No plumbing, no commitment, and a good starting point if you want to try filtration without using any worktop space permanently.

Both are available in our water treatment collection.

Do They Work Together?

In a practical sense, yes. They address different parts of the same broader question, which is what you are putting into your body through the air you breathe and the water you drink.

There is no interaction between an air purifier and a water filter. They do entirely separate jobs. But in a home with good air filtration and good water filtration, you are covering both routes of exposure rather than just one.

Where to Start

If you have allergies, asthma, or anyone in the house with a respiratory condition, air quality is the first priority. A HEPA purifier in the bedroom will do more for your sleep and your symptoms than almost anything else in this category.

If your water tastes heavily of chlorine, or if you are simply curious about what your tap water contains, a filtered jug costs relatively little and gives you a straightforward answer. If you want more thorough removal across a wider range of compounds, the countertop RO unit is the step up.

Most people do not need to solve everything at once. Pick the most obvious starting point and go from there.

Frequently Asked Questions

Is UK tap water safe to drink?

Yes. UK tap water meets legal safety standards and is regularly tested. However, meeting those standards does not mean it is free of everything some people would prefer to remove, including chlorine, microplastics, and trace pharmaceutical compounds at low levels. Filtration is about preference and peace of mind as much as safety.

What does reverse osmosis actually remove?

Reverse osmosis pushes water through a semi-permeable membrane that blocks contaminants larger than water molecules. The Tappwater Countertop RO SMR removes over 100 different compounds including chlorine, heavy metals, microplastics, nitrates, and pharmaceutical residues. The filter cartridge also includes Swedish Rocks, which reintroduce important minerals back into the water. It is the most thorough filtration method available for domestic use.

Do I need both an air purifier and a water filter?

Not necessarily. They do different jobs. If your main concern is allergies or indoor air quality, start with an air purifier. If your concern is what is in your drinking water, start with a filter. Some households benefit from both, particularly if they have allergy sufferers and are also on a harder water supply.

How often do filters need replacing on these products?

Filter life varies by product and usage. The Tappwater countertop unit and pitcher both have replacement filter programmes. Breathing Space also runs a filter subscription service for air purifier filters, so you are not left trying to remember when a replacement is due.

Can an air purifier help with mould?

An air purifier with HEPA filtration will capture mould spores from the air, which has real health benefits. However, it does not address the moisture that causes mould to grow in the first place. If you have visible mould or condensation, a dehumidifier should be your first step. The two devices work well together: the dehumidifier removes the moisture source, the purifier manages the airborne spores in the meantime.

Breathing Space has been advising on air quality and home wellness products since 1999. Call 01207 507444 or browse breathingspace.co.uk.