Why Does Filtered Water Taste Different? | Reasons Explained

Have you switched to filtered water and noticed something strange: it tastes different? Some people find filtered water tastes cleaner and more neutral, while others think it tastes flat or even weird. So why does filtered water taste different from tap water?

In this blog we will explore the reasons behind the taste change, the role of water filtration systems and tips for improving your drinking water experience. Perfect for anyone in the UK who wants to know more about water filtration and its effects on taste.

Before we get into the reasons for the taste difference, let’s first look at how a water filter works. Water filtration systems are designed to remove impurities from your drinking water, such as chlorine, bacteria, sediments and heavy metals. Depending on the type of filter used, the process may involve activated carbon, reverse osmosis or other filtration methods.

These systems use various materials and technologies to remove contaminants that can affect the taste, smell and quality of the water. While this results in cleaner, safer drinking water, it can also change the flavour of the water.

Tap water can contain various substances that affect its taste, including chlorine, chloramine and other chemicals added during water treatment. Chlorine is used to disinfect water but can leave behind a distinct, unpleasant taste and smell.

When a filter removes these chemicals the taste of the water changes. The water tastes fresher and more neutral as the sharp chemical flavours have been removed. Some people like this change, others notice the difference more.

Click here to learn more about Parasites in Tap Water: What You Should Know

Another factor that affects the taste of filtered water is the mineral content. Tap water contains naturally occurring minerals like calcium, magnesium and sodium which contribute to its taste. When you filter your water some of these minerals are removed, especially with more advanced filtration systems like reverse osmosis.

As a result the water tastes "softer" or "flatter". While this isn’t harmful it can feel less refreshing to some people who are used to the mineral rich taste of tap water. On the other hand the removal of these minerals can make the water taste cleaner and purer.

The type of filter you choose will also affect the taste of your water. Different filtration technologies target different types of impurities and each process changes the water in a unique way. Here’s a breakdown of some common filters:

These filters are great at removing chlorine, volatile organic compounds (VOCs) and bad odours making water taste cleaner. However they leave the minerals intact so the water will still have some taste.

The reverse osmosis water filters remove most contaminants including minerals which can result in a more neutral taste. Some people find reverse osmosis water a bit flat as the minerals have been stripped away.

UV filtration targets bacteria and viruses and doesn’t affect the taste of the water.

If you’re sensitive to the taste of your water choosing the right filter can make a big difference.

Yes, filtered water can sometimes have a different pH level. Filters particularly reverse osmosis systems tend to lower the pH of the water making it slightly more acidic. This can contribute to the different taste of the water especially if you’re used to drinking water with a more neutral pH from the tap.

Most filters don’t affect the pH dramatically but it’s worth noting that pH level of water can affect how it tastes. Slightly acidic water might have a tangy or sharp flavour while water with a more neutral pH might taste smoother.

If you don’t like the taste of your filtered water here are a few simple tricks you can try to improve it:

Not all water filters are created equal. A high quality filter will remove contaminants without compromising the taste of the water. When shopping for a filter look for models that offer high quality filtration methods like activated carbon or reverse osmosis while also preserving beneficial minerals.

You might also want to consider a filter that has a remineralisation feature. This adds back some essential minerals to the water which can help improve the taste while still providing the benefits of filtration.

How you store your filtered water can also affect its taste. Water left in an open container or exposed to sunlight can develop a stale, unpleasant taste. To preserve the freshness always store your filtered water in a clean, sealed container. A glass or stainless-steel bottle can help keep the water quality and taste.

In conclusion, the reason filtered water tastes different is mainly due to the removal of contaminants and changes to its mineral content. Some people may miss the mineral rich taste of tap water while others prefer the cleaner, fresher taste of filtered water.

Ultimately it’s up to you to decide between filtered and unfiltered water. If you want purer, safer water with fewer contaminants a filtration system is a good investment. And with the right filter you can improve the taste and enjoy drinking it.